Document:

<PAGE>   1

                                                                    EXHIBIT 4(b)

                          SECOND SUPPLEMENTAL INDENTURE

                            Dated as of June 29, 2000

                                     between

                               SEMCO ENERGY, INC.,

                                    AS ISSUER

                                       and

                  BANK ONE TRUST COMPANY, NATIONAL ASSOCIATION,

                                   AS TRUSTEE

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                                TABLE OF CONTENTS

<TABLE>

<S>                                                                                                         <C>
ARTICLE I DEFINITIONS.......................................................................................1

         Section 1.1       Certain Terms Defined............................................................1

ARTICLE II ISSUE, EXECUTION, FORM AND REGISTRATION OF
SECURITIES

         Section 2.1         Authentication and Delivery of Securities......................................4
         Section 2.2         Execution of Securities........................................................4
         Section 2.3         Certificate of Authentication..................................................4
         Section 2.4         Form, Denomination and Date of Securities......................................4
         Section 2.5         Global Securities..............................................................7
         Section 2.6         Original Issue Discount........................................................7

ARTICLE III TERMS OF ROARS..................................................................................8

         Section 3.1         Interest and Interest Payment Dates............................................8
         Section 3.2         Remarketing and Determination of Interest Rate to Maturity.....................9
                             (i)    Interest Rate to Maturity...............................................9
                             (ii)   Floating Rate Period...................................................11
                             (iii)  Notification of Results; Settlement....................................13

         Section 3.3         Redemption....................................................................14

ARTICLE IV MISCELLANEOUS...................................................................................14

         Section 4.1         Ratification of Indenture.....................................................15
         Section 4.2         Trustee Not Responsible for Recitals..........................................15
         Section 4.3         Governing Law.................................................................15
         Section 4.4         Separability..................................................................15
         Section 4.5         Counterparts..................................................................15

</TABLE>

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     SECOND SUPPLEMENTAL INDENTURE, dated as of June 29, 2000 (the "Second
Supplemental Indenture"), between SEMCO Energy, Inc., a corporation duly
organized and existing under the laws of the State of Michigan, (the "Company"),
and Bank One Trust Company, National Association, a national banking
association, as trustee (the "Trustee")

     WHEREAS, the Company executed and delivered the indenture, dated as of
October 23, 1998 (the "Base Indenture"), to the Trustee to provide for the
future issuance of the Company's debentures, notes, bonds or other evidences of
indebtedness (the "Securities"), to be issued from time to time in one or more
series as might be determined by the Company under the Base Indenture; and

     WHEREAS, the Company entered into a First Supplemental Indenture dated as
of June 16, 2000, to the Base Indenture; and

     WHEREAS, pursuant to the terms of the Base Indenture, the Company desires
to provide for the establishment of a new series of its Securities to be known
as its 8.95% Remarketable or Redeemable Securities Due 2008 (the "ROARS(sm)" or
the "Securities"), the form and substance of such Securities and the terms,
provisions and conditions thereof to be set forth as provided in the Base
Indenture as heretofore supplemented and as further supplemented by this Second
Supplemental Indenture (together, the "Indenture"); and

     WHEREAS, the Company has requested that the Trustee execute and deliver
this Second Supplemental Indenture and all requirements necessary to make this
Second Supplemental Indenture a valid instrument in accordance with its terms,
and to make the Securities, when executed by the Company and authenticated and
delivered by the Trustee, the valid obligations of the Company and all acts and
things necessary have been done and performed to make this Second Supplemental
Indenture enforceable in accordance with its terms, and the execution and
delivery of this Second Supplemental Indenture has been duly authorized in all
respects.

     NOW THEREFORE, in consideration of the purchase and acceptance of the
Securities by the Holders thereof, and for the purpose of setting forth, as
provided in the Indenture, the form and substance of the Securities and the
terms, provisions and conditions thereof, the Company covenants and agrees with
the Trustee as follows:

                                   ARTICLE I.
                                   DEFINITIONS

SECTION 1.1.   Definition of Terms.

     Unless the context otherwise requires:

     (a)  a term defined in the Indenture has the same meaning when used in this
Second Supplemental Indenture;

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     (b) a term defined anywhere in this Second Supplemental Indenture has the
same meaning throughout;

     (c) the singular includes the plural and vice versa;

     (d) headings are for convenience of reference only and do not affect
interpretation;

     (e) the following terms have the meanings given to them in this Section
1.1(e);

     "Agent Members" has the meaning set forth in Section 2.4(b).

     "Applicable Spread" has the meaning set forth in Section 3.2(b)(i).

     "Beneficial Owners" has the meaning set forth in Section 3.2(b)(i).

     "Bid" means the Fixed Rate Bid or the Floating Rate Bid, as the case may
be.

     "Cedel" has the meaning set forth in Section 2.4(b).

     "Comparable Treasury Issues" has the meaning set forth in Section
3.2(b)(i).

     "Comparable Treasury Price" has the meaning set forth in Section 3.2(b)(i).

     "Dollar Price" has the meaning set forth in Section 3.2(b)(i).

     "Euroclear" has the meaning set forth in Section 2.4(b).

     "Fixed Rate Bid" has the meaning set forth in Section 3.2(b)(i).

     "Fixed Rate Determination Date" has the meaning set forth in Section 3
2(b)(i).

     "Fixed Rate Remarketing Date" has the meaning set forth in Section 3.1.

     "Floating Period Interest Rate" has the meaning set forth in Section 3
2(b)(ii).

     "Floating Period Notification Date" has the meaning set forth in Section 3
2(b)(ii).

     "Floating Period Option" has the meaning set forth in Section 3.2(b)(ii).

     "Floating Period Termination Date" has the meaning set forth in Section
3,2(b)(ii).

     "Floating Period Termination Notification Date" has the meaning set forth
it Section 3.2(b)(ii).

     "Floating Rate Bid" has the meaning set forth in Section 3.2(b)(ii).

     "Floating Rate Period" has the meaning set forth in Section 3.2(b)(ii).

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<PAGE>   5

     "Floating Rate Remarketing Date(s)" has the meaning set forth in Section
3.2(b)(ii).

     "Floating Rate Reset Period" has the meaning set forth in Section 3.2
(b)(ii).

     "Floating Rate Spread" has the meaning set forth in Section 3.2(b)(ii).

     "Floating Rate Spread Determination Date" has the meaning set forth in
Section 3.2(b)(ii).

     "Global Security" has the meaning set forth in Section 2.4(b).

     "Original Issue Date" of any Security (or portion thereof) means the
earlier of (a) the date of such Security or (b) the date of any Security or
portion thereof) in exchange for which such Security was issued (directly or
indirectly) on registration of transfer, exchange or substitution.

     "Reference Corporate Dealers" has the meaning set forth in Section 3
2(b)(i).

     "Reference Money Market Dealer" has the meaning set forth in Section
3.2(b)(ii).

     "Reference Rate" has the meaning set forth in Section 3.2(b)(ii).

     "Reference Rate Determination Date" has the meaning set forth in Section
3.2(b)(ii).

     "Reference Treasury Dealer" has the meaning set forth in Section 3.2(b)(i).

     "Reference Treasury Dealer Quotations" has the meaning set forth in Section
3..2(b)(i).

     "Remaining Scheduled Payments" has the meaning set forth in Section
3.2(b)(i).

     "Remarketing Date(s)" has the meaning set forth in Section 3.1.

     "Telerate Page 500" has the meaning set forth in Section 3.2(b)(i).

     "Treasury Rate" has the meaning set forth in Section 3.2(b)(i).

     "U.S. Depositary" means The Depository Trust Company.

                                       3

<PAGE>   6

                                   ARTICLE II
              ISSUE, EXECUTION, FORM AND REGISTRATION OF SECURITIES

SECTION 2.1         AUTHENTICATION AND DELIVERY OF SECURITIES.

     Upon the execution and delivery of this Indenture, or from time to time
thereafter, Securities in an aggregate principal amount not in excess of
$160,000,000 (or such higher amount as may be authorized by a resolution of the
Board of Directors of the Company or a committee thereof) may be executed by the
Company and delivered to the Trustee for authentication, and the Trustee shall
thereupon authenticate and deliver said Securities to or upon the written order
of the Company, signed by both (a) its Chairman of the Board of Directors, or
its President or any Vice President and (b) by its Chief Financial Officer, or
its Secretary or any Assistant Secretary, or its Treasurer or any Assistant
Treasurer without any further action by the Company. The Securities shall be
direct, unconditional obligations of the Company and shall rank pari passu
without preference among themselves and equally in priority of payment with all
other present and future, unsecured senior indebtedness of the Company.

SECTION 2.2         EXECUTION OF SECURITIES.

     The Securities shall be signed on behalf of the Company by both (a) its
Chairman of the Board of Directors or its President or any Vice President and
(b) by its Chief Financial Officer or its Secretary or its Assistant Secretary
or its Treasurer or any Assistant Treasurer, under its corporate seal which may,
but need not, be attested. Such signatures may be the manual or facsimile
signatures of the present or any future such officers. The seal of the Company
may be in the form of a facsimile thereof and may be impressed, affixed,
imprinted or otherwise reproduced on the Securities. Typographical and other
minor errors or defects in any such reproduction of the seal or any such
signature shall not affect the validity or enforceability of any Security that
has been duly authenticated and delivered by the Trustee.

SECTION 2.3         CERTIFICATE OF AUTHENTICATION.

     Only such Securities as shall bear thereon a certificate of authentication
substantially in the form recited in the form of Security attached as Exhibit A
hereto, executed by the Trustee by manual signature of one of its authorized
signatories, shall be entitled to the benefits of this Indenture or be valid or
obligatory for any purpose. Such certificate by the Trustee upon any Security
executed by the Company shall be conclusive evidence that the Security so
authenticated has been duly authenticated and delivered hereunder and that the
Holder is entitled to the benefits of this Indenture.

SECTION 2.4         FORM, DENOMINATION AND DATE OF SECURITIES.

     (a) The Securities and the Trustee's certificate of authentication shall be
substantially in the form set forth in the form of Security attached as Exhibit
A hereto. The Securities shall be numbered, lettered, or otherwise distinguished
in such manner or in accordance with such plans as the officers of the Company
executing the same may determine with the approval of the Trustee.

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<PAGE>   7

     Any of the Securities may be issued with appropriate insertions, omissions,
substitutions and variations and may have imprinted or otherwise reproduced
thereon such legend or legends, not inconsistent with the provisions of this
Indenture, as may be required to comply with any law or with any rules or
regulations pursuant thereto, or with the rules of any securities market in
which the Securities are admitted to trading, or to conform to general usage.

     (b)  (i)  This Section 2.4(b)(i) shall apply only to Securities in
global form ("Global Securities") deposited with the U.S. Depositary.

     The Company shall execute and the Trustee shall, in accordance with this
Section 2.4(b)(i), authenticate and deliver initially Global Securities that (a)
shall be registered in the name of the U.S. Depositary for such Global
Securities or the nominee of such U.S. Depositary, (b) shall be deposited on
behalf of Agent Members (as defined herein) with the Trustee as custodian for
the U.S. Depositary and (c) shall bear legends substantially to the following
effect:

     "UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
     [INSERT NAME AND ADDRESS OF U.S. DEPOSITARY] TO THE COMPANY OR ITS AGENT
     FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
     ISSUED IN EXCHANGE FOR THIS CERTIFICATE OR ANY PORTION HEREOF IS REGISTERED
     IN THE NAME OF [INSERT NAME OF U.S. NOMINEE OF DEPOSITARY], OR TO SUCH
     OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF [INSERT
     NAME OF U.S. DEPOSITARY], OR SUCH OTHER NAME AS IS REQUESTED BY AN
     AUTHORIZED REPRESENTATIVE OF [INSERT NAME OF U.S. DEPOSITARY] (AND ANY
     PAYMENT HEREON IS MADE TO [INSERT NAME OF NOMINEE OF U.S. DEPOSITARY]), ANY
     TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY
     PERSON OTHER THAN (INSERT NAME OF U.S. DEPOSITARY OR A NOMINEE THEREOF] IS
     WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, [INSERT NAME OF NOMINEE
     OF U.S. DEPOSITARY] HAS AN INTEREST HEREIN".

     "TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE,
     BUT NOT IN PART, TO NOMINEES OF [INSERT NAME OF U.S. DEPOSITARY] OR TO A
     SUCCESSOR THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF
     THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH
     THE RESTRICTIONS SET FORTH IN SECTION 305 OF THE INDENTURE REFERRED TO ON
     THE REVERSE HEREOF".

     Members of, or participants in, a U.S. Depositary ("Agent Members") shall
have no rights under this Indenture with respect to any Global Security held on
their behalf by the U.S. Depositary or under any Global Security, and the U.S.
Depositary may be treated by the Company, the Trustee, and any agent of the
Company or the Trustee as the absolute owner of such Global Security for all
purposes whatsoever. Notwithstanding the foregoing, nothing herein

                                       5

<PAGE>   8

shall prevent the Company, the Trustee or any agent of the Company or the
Trustee from giving effect to any written certification, proxy or other
authorization furnished by the U.S. Depositary or impair, as between the U.S.
Depositary and its Agent Members, the operation of customary practices governing
the exercise of the rights of a holder of any security.

     (ii) This Section 2.4(b)(ii) shall apply only to the Global Security
deposited on behalf of the purchasers of the Securities represented thereby with
the Trustee as custodian for the U.S. Depositary for credit to their respective
accounts (or to such other accounts as they may direct) at Euroclear System
("Euroclear") or Cedel, S.A. ("Cedel") insofar as interests in the Global
Security are held by the Agent Members for Euroclear or Cedel.

     The provisions of the "Operating Procedures of the Euroclear System" and
the "Terms and Conditions Governing Use of Euroclear" and the "Management
Regulations" and "Instructions to Participants" of Cedel, respectively, shall be
applicable to such Global Security insofar as interests therein are held by the
Agent Members for Euroclear and Cedel. Account holders or participants in
Euroclear and Cedel shall have no rights under this Indenture with respect to
the Global Security, and the nominee of the U.S. Depositary may be treated by
the Company and the Trustee and any agent of the Company or the Trustee as the
owner of the Global Security for all purposes whatsoever. Notwithstanding the
foregoing, nothing herein shall prevent the Company, the Trustee or any agent of
the Company or the Trustee from giving effect to any written certification,
proxy or other authorization furnished by the U.S. Depositary or impair, as
between the U.S. Depositary and its Agent Members, the operation of customary
practices governing the exercise of the rights of a holder of any security.

     (c)  Each Security shall be dated the date of its authentication and shall
bear interest from the applicable date, and shall be payable on the dates
specified on the face of the form of Security attached as Exhibit A hereto.

     (d)  The Person in whose name any Security is registered at the close of
business on the record date specified in the Securities with respect to any
Interest Payment Date shall be entitled to receive the interest, if any, payable
on such Interest Payment Date notwithstanding any transfer or exchange of such
security subsequent to the record date and prior to such Interest Payment Date,
except if and to the extent the Company shall default in the payment of the
interest due on such Interest Payment Date, in which case such defaulted
interest shall be paid to the Persons in whose names Outstanding Securities are
registered at the close of business on a subsequent special record date, to be
established (together with the related payment date) by the Company with the
consent of the Trustee. Such special record date shall not be more than 15 nor
less than 10 Business Days prior to the payment date. Not more than 15 days
prior to the special record date, the Company (or the Trustee, in the name of
and the expense of the Company) shall mail to Holders a notice that states the
special record date, the related payment date and the amount of interest to be
paid. Notice of the proposed payment of such defaulted interest and the special
record date therefor having been mailed as aforesaid, such defaulted interest
shall be paid to the Persons in whose names the Securities are registered on
such special record date.

     (e)  The Securities shall be issuable in the denominations specified in the
form of Security attached as Exhibit A hereto.

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<PAGE>   9

SECTION 2.5         GLOBAL SECURITIES.

     (a)  Portions of a Global Security deposited with the U.S. Depositary
pursuant to Section 2.4 shall be transferred in certificated form to the
beneficial owners thereof only if such transfer complies with Section 305 of the
Base Indenture and (i) the U.S. Depositary notifies the Company that it is
unwilling or unable to continue as U.S. Depositary for such Global Security or
if at any time such U.S. Depositary ceases to be a "clearing agency" registered
under the Exchange Act and a successor depositary is not appointed by the
Company within 90 days of such notice, or (ii) an Event of Default has occurred
and is continuing with respect to the Securities and payment of principal
thereof and interest thereon has been accelerated.

     (b)  Portions of any Global Security that are transferable to the
beneficial owners thereof pursuant to this Section 2.5 shall be surrendered by
the U.S. Depositary to the Trustee at its New York office for registration of
transfer, in whole or from time to time in part, without charge and the Trustee
shall authenticate and deliver, upon such registration of transfer of each
portion of such Global Security, an equal aggregate principal amount of
Securities of authorized denominations. Any portion of a Global Security whose
registration is transferred pursuant to this Section 2.5 shall be executed,
authenticated and delivered only in the denominations specified in the form of
Security attached as Exhibit A hereto and registered in such names as the U.S.
Depositary shall direct.

     (c)  Subject to the provisions of Section 2.4(b) above, the registered
Holder of any Global Security may grant proxies and otherwise authorize any
person, including Agent Members and persons that may hold interests through
Agent Members, to take any action which a Holder is entitled to take under this
Indenture or the Securities.

     (d)  In the event of the occurrence of any of the events specified in
paragraph (a) of this Section 2.5, the Company shall promptly make available to
the Trustee a reasonable supply of certificated Securities in definitive fully,
registered form without interest coupons.

SECTION 2.6         ORIGINAL ISSUE DISCOUNT.

     If the original issue discount rules are applicable, the Company shall file
with the Trustee promptly at the end of each calendar year (i) a written notice
specifying the amount of original issue discount (including daily rates and
accrual periods) accrued on Outstanding Securities as of the end of such year
and (ii) such other specific information relating to such original issue
discount as may then be relevant under the Internal Revenue Code of 1986, as
amended from time to time.

                                       7

<PAGE>   10

                                   ARTICLE III

                                 TERMS OF ROARS

SECTION 3.1         INTEREST AND INTEREST PAYMENT DATES.

     The ROARS shall bear interest at 8.95 % per annum, for the period from June
29, 2000 to but excluding July 1, 2003, which is the first Remarketing Date. The
Company shall pay interest on the ROARS semi-annually until the first
Remarketing Date on January 1 and July 1 of each year, commencing January 1,
2001. Interest shall be computed on the basis of a 360-day year of twelve 30-day
months.

     The ROARS shall accrue interest from the Fixed Rate Remarketing Date,
semi-annually on each day that is a six-month anniversary of such date. Interest
on the ROARS from the Fixed Rate Remarketing Date shall be computed on the basis
of a 360-day year consisting of twelve 30-day months. Interest on the ROARS
accruing during any Floating Rate Reset Period shall be payable on the next
following Reference Rate Reset Date if such date is a Business Day or on the
next following Business Day. Interest on the ROARS during the Floating Rate
Period shall be computed on the basis of the actual number of days in such
Floating Rate Reset Period over a 360-day year.

     Interest on the ROARS payable on any Interest Payment Date shall be payable
to the persons in whose name the ROARS are registered, on the fifteenth calendar
day (whether or not a Business Day) immediately preceding the related Interest
Payment Date. Interest payments on the ROARS shall be in the amount of interest
accrued from and including the next preceding Interest Payment Date (or from and
including June 29, 2000 if no interest has been paid or duly provided with
respect to the ROARS) to but excluding the relevant Interest Payment Date,
Remarketing Date or Maturity Date, as the case may be.

     For this purpose, the following terms shall have the following meanings:

     "FIXED RATE REMARKETING DATE" means July 1, 2003 assuming the Remarketing
Dealer has elected to purchase the ROARS and the Company has not elected to
exercise its Floating Period Option, or the subsequent Remarketing Date in the
event that the Company has elected to exercise its Floating Period Option.

     "REMARKETING DATE(S)" means July 1, 2003, assuming that the Remarketing
Dealer has elected to purchase the ROARS and the Company has not elected to
exercise its Floating Period Option on July 1, 2003 and one of the first days of
each month thereafter until July 1, 2004, if the Company has elected to exercise
its Floating Period Option.

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<PAGE>   11

SECTION 3.2         REMARKETING AND DETERMINATION OF INTEREST RATE TO MATURITY.

     The Remarketing Dealer's obligations set forth herein shall be performed
pursuant to the Remarketing Agreement.

     (a)  MANDATORY TENDER.

     If the Remarketing Dealer gives notice to the Company and the Trustee no
earlier than 20 Business Days prior to the first Remarketing Date and not later
than 4:00 p.m., New York City time, on the 15th Business Day prior to the first
Remarketing Date, of its intention to purchase the ROARS for remarketing on such
Remarketing Date (the "Notification Date"), the ROARS shall be automatically
tendered, or deemed tendered, to the Remarketing Dealer for purchase on such
Remarketing Date, except in certain circumstances described in Section 3.3. If
the ROARS are tendered for remarketing, the Remarketing Dealer shall sell the
total aggregate principal amount of the ROARS at the Dollar Price, to the
Reference Corporate Dealer or the Reference Money Market Dealer, whichever is
applicable, providing the lowest Bid. If two or more of the applicable Reference
Dealers provide the lowest Bid, the Remarketing Dealer shall sell the ROARS to
one or more of such Reference Dealers, as it determines in its sole discretion.
If the Remarketing Dealer elects to remarket the ROARS, the obligation of the
Remarketing Dealer to purchase the ROARS on the applicable Remarketing Date is
subject to the conditions set forth in the Remarketing Agreement. If for any
reason the Remarketing Dealer does not purchase all of the ROARS on the first
Remarketing Date, the Company shall be required to redeem the ROARS at a price
equal to the principal amount thereof, plus all accrued and unpaid interest, if
any, if such Remarketing Date is the first Remarketing Date, or at the Dollar
Price, plus accrued and unpaid interest, if any, on any such subsequent
Remarketing Date.

     (b)  REMARKETING. The Interest Rate to Maturity shall be established by the
Remarketing Dealer in accordance with the following procedures:

     (i)  INTEREST RATE TO MATURITY.

     If the Remarketing Dealer elects to purchase the ROARS, then by 3:30 p.m.,
New York City time, on the third Business Day immediately preceding any
Remarketing Date (a "Floating Rate Spread Determination Date" or the "Fixed Rate
Determination Date", depending on the following election, each a "Determination
Date") the Remarketing Dealer will determine the Floating Rate Spread in the
case that the Company has elected the Floating Period Option, or otherwise the
Interest Rate to Maturity to the nearest one hundredth (0.01) of one percent per
annum unless the Company has chosen to redeem, or is required to redeem, the
ROARS. Each Floating Period Interest Rate will equal the sum of a Reference Rate
and a Floating Rate Spread. The Interest Rate to Maturity shall be equal to the
sum of 6.50% (the "Base Rate") and the Applicable Spread, which will be based on
the Dollar Price of the ROARS. The Interest Rate to Maturity for the ROARS
announced by the Remarketing Dealer, absent manifest error, shall be binding and
conclusive upon the holders of beneficial interests in the ROARS (the
"Beneficial Owners"), the Company and the Trustee.

                                       9

<PAGE>   12

     For this purpose, the following terms shall have the following meanings:

     "APPLICABLE SPREAD" shall be the lowest Bid, expressed as a spread (in the
form of a percentage or in basis points) above the Base Rate for the ROARS,
obtained by the Remarketing Dealer by 3:30 p.m., New York City time, on the
Fixed Rate Determination Date from the Bids quoted to the Remarketing Dealer by
five Reference Corporate Dealers. If fewer than five Reference Corporate Dealers
submit Bids as set forth in this section (b)(i) of Section 3.2, then the
Applicable Spread shall be the lowest such Bid obtained as set forth in this
subsection (b)(i) of Section 3.2. A "Fixed Rate Bid" will be an irrevocable
offer to purchase the total aggregate outstanding principal amount of the ROARS
at the Dollar Price, but assuming (i) a settlement date that is the Fixed Rate
Remarketing Date applicable to such ROARS, without accrued interest, (ii) a
maturity date that is the fifth anniversary of the Fixed Rate Remarketing Date
and (iii) a stated annual interest rate equal to the relevant Base Rate plus the
spread bid by the applicable Reference Corporate Dealer.

     "COMPARABLE TREASURY ISSUES" for the ROARS means the U.S. Treasury security
or securities selected by the Remarketing Dealer, as of the first Remarketing
Date, as having an actual or interpolated maturity or maturities comparable to
the remaining term of the ROARS being purchased by the Remarketing Dealer.

     "COMPARABLE TREASURY PRICE" means, with respect to the first Remarketing
Date, (i) the offer prices for the Comparable Treasury Issues (expressed, in
each case, as a percentage of its principal amount) at 12:00 noon, New York City
time, on the first Determination Date, as set forth on "Telerate Page 500" (or
such other page as may replace "Telerate Page 500"), or (ii) if such page (or
any successor page) is not displayed or does not contain such offer prices on
the first Determination Date, (A) the average of the Reference Treasury Dealer
Quotations for the first Remarketing Date, after excluding the highest and
lowest such Reference Treasury Dealer Quotations, or (B) if the Remarketing
Dealer obtains fewer than four such Reference Treasury Dealer Quotations, the
average of all such Reference Treasury Dealer Quotations. "Telerate Page 500",
means the display designated as "Telerate Page 500" on Dow Jones Markets (or
such other page as may replace Telerate Page 500 on such service) or such other
service displaying the offer prices specified in clause (i) above as may replace
Dow Jones Markets. "Reference Treasury Dealer Quotations" means, with respect to
each Reference Treasury Dealer and the Fixed Rate Remarketing Date, the offer
prices for the Comparable Treasury Issues (expressed in each case as a
percentage of its principal amount) quoted in writing to the Remarketing Dealer
by such Reference Treasury Dealer by 3:30 p.m., New York City time, on the first
Determination Date.

     "DOLLAR PRICE" means, with respect to the ROARS, the present value, as of
the first Remarketing Date, of the Remaining Scheduled Payments for such ROARS
discounted to the first Remarketing Date on a semi-annual basis (assuming a
360-day year consisting of twelve 30-day months) at the Treasury Rate.

     "FIXED RATE DETERMINATION DATE" means the third Business Day prior to the
Fixed Rate Remarketing Date.

                                       10

<PAGE>   13

     "REFERENCE CORPORATE DEALER" means each of up to five leading dealers of
publicly traded debt securities, including debt securities of the Company, which
shall be selected by the Company. The Company shall advise the Remarketing
Dealer of its selection of Reference Corporate Dealers no later than five
Business Days prior to the Fixed Rate Remarketing Date. One of such Reference
Corporate Dealers selected by the Company shall be Banc of America Securities
LLC, if it is then the Remarketing Dealer.

     "REFERENCE TREASURY DEALER" means each of up to five dealers to be selected
by the Company, and their respective successors; provided that if any of the
foregoing or their affiliates ceases to be a primary U.S. Government securities
dealer (a "Primary Treasury Dealer"), the Company shall substitute therefor
another Primary Treasury Dealer. One of such Reference Treasury Dealers selected
by the Company shall be Banc of America Securities LLC, if it is then the
Remarketing Dealer.

     "REMAINING SCHEDULED PAYMENTS" means, with respect to the ROARS, the
remaining scheduled payments of the principal thereof and interest thereon,
calculated at the Base Rate applicable to such ROARS, that would be due after
the first Remarketing Date to and including the Stated Maturity Date; provided
that if such Remarketing Date is not an Interest Payment Date with respect to
such ROARS, the amount of the next succeeding scheduled interest payment
thereon, calculated at the Base Rate, will be reduced by the amount of interest
accrued thereon, calculated at such Base Rate only, to the first Remarketing
Date.

     "TREASURY RATE" for the ROARS means, with respect to the first Remarketing
Date, the rate per annum equal to the semi-annual equivalent yield to maturity
or interpolated (on a day count basis) yield to maturity of the Comparable
Treasury Issues, assuming a price for the Comparable Treasury Issues (expressed
as a percentage of their principal amounts) equal to the Comparable Treasury
Price for such Remarketing Date.

     (ii) FLOATING RATE PERIOD.

     Following the Remarketing Dealer's election to purchase the ROARS, but
prior to the fourth Business Day prior to the first Remarketing Date (the
"Floating Period Notification Date"), the Company may elect to exercise its
Floating Period Option. Under these circumstances, the ROARS shall be remarketed
at floating rate for a period of one year, or until such date which otherwise
would be the Reference Rate Reset Date following the date on which the Company
elects to terminate such Floating Rate Period (the "Floating Rate Period
Termination Notification Date"), whichever is sooner (the "Floating Period
Termination Date"). In the event that the Company elects to exercise its
Floating Period Option, the maturity of the ROARs will be extended to the fifth
anniversary of the Fixed Rate Remarketing Date, not to exceed July 1, 2009.

     The amount of the interest for each day that the ROARS are outstanding
during the Floating Rate Period will be calculated by dividing the Floating
Period Interest Rate in effect for such day by 360 and multiplying the result by
the Dollar Price. The amount of interest to be paid for any Floating Rate Reset
Period will be calculated by adding the daily interest amounts for

                                       11

<PAGE>   14

each day in the Floating Rate Reset Period. The Floating Period Interest Rate
for the ROARS announced by the Remarketing Dealer, absent manifest error, will
be binding and conclusive upon the holders of beneficial interests in such ROARS
(the "Beneficial Owners"), the Company and the Trustee.

     For this purpose the following terms shall have the following meanings:

     "FLOATING PERIOD INTEREST RATE" means the sum of the Reference Rate and the
Floating Rate Spread.

     "FLOATING PERIOD OPTION" means the Company's right, on any date subsequent
to the Remarketing Dealer's election to purchase the ROARS but prior to the
fourth Business Day prior to the first Remarketing Date, to require the
Remarketing Dealer to remarket the ROARS at the Floating Period Interest Rate.

     "FLOATING RATE PERIOD" means the period from (and including) the Floating
Rate Remarketing Date to (but excluding) the Floating Period Termination Date.

     "FLOATING RATE REMARKETING DATE" means July 1, 2003 in the event the
Company has elected to exercise its Floating Period Option.

     "FLOATING RATE RESET PERIOD" means the period from (and including) the
first Reference Rate Reset Date to (but excluding) the next following Reference
Rate Reset Date and thereafter the period from (and including) a Reference Rate
Reset Date to (but excluding) the next following Reference Rate Reset Date;
provided that the final Floating Rate Reset Period shall run to (but exclude)
the Floating Period Termination Date.

     "FLOATING RATE SPREAD" shall be the lowest Bid expressed as a spread (in
the form of a percentage or in basis points) above the Reference Rate for the
ROARS, obtained by the Remarketing Dealer at 3:30 p.m., New York City time, on
the third Business Day prior to the Floating Rate Remarketing Date, from the
Bids quoted to the Remarketing Dealer by five Reference Money Market Dealers. If
fewer than five Reference Money Market Dealers submit Bids, as set forth in this
subsection (b)(ii) of Section 3.2, then the Floating Rate Spread shall be the
lowest such Bid obtained as set forth in this subsection (b)(ii) of Section 3.2.
A "Floating Rate Bid" will be an irrevocable offer to purchase the total
aggregate outstanding principal amount of the ROARS at the Dollar Price, but
assuming (i) a settlement date that is the Floating Rate Remarketing Date,
without accrued interest, (ii) a maturity date equal to the Floating Period
Termination Date, (iii) a stated annual interest rate equal to the Reference
Rate plus the Floating Rate Spread, (iv) that the ROARS are callable by the
Remarketing Dealer, at the Dollar Price, on any Reference Rate Reset Date after
the first Remarketing Date or on the Floating Period Termination Date and (v)
that the ROARS will be repurchased by the Company at the Dollar Price on the
Floating Period Termination Date, if not previously called by the Remarketing
Dealer.

     "FLOATING RATE SPREAD DETERMINATION DATE" means the third Business Day
prior to the Floating Rate Remarketing Date.

                                       12

<PAGE>   15

     "REFERENCE MONEY MARKET DEALER" means each of up to five leading dealers of
publicly traded debt securities, including debt securities of the Company, which
shall be selected by the Company, who are also leading dealers in money market
instruments. The Company shall advise the Remarketing Dealer of its selection of
Reference Money Market Dealers no later than five Business Days prior to the
Floating Rate Remarketing Date. One of such Reference Money Market Dealers
selected by the Company shall be Banc of America Securities LLC, if it is then
the Remarketing Dealer.

     "REFERENCE RATE" means the rate for each Floating Rate Reset Period which
shall be the rate for deposits in U.S. Dollars for a period of one month each
which appears on the Telerate Page 3750 (or any successor page) as of 11:00
a.m., London time, on the applicable Reference Rate Determination Date. If no
rate appears on Telerate Page 3750 on the Reference Rate Determination Date, the
Remarketing Dealer will request the principal London offices of four major
reference banks in the London Inter-Bank Market, to provide it with its offered
quotation for deposits in U.S. dollars for the period of one month, commencing
on the first day of the Floating Rate Reset Period, to prime banks in the London
Inter-Bank Market at approximately 11:00 a.m., London time, on that Reference
Rate Determination Date and in a principal amount that is representative for a
single transaction in U.S. Dollars in that market at that time. If at least two
quotations are provided, then the Reference Rate will be the average of those
quotations. If fewer than two quotations are provided, then the Reference Rate
will be the average (rounded, if necessary, to the nearest one hundredth of a
percent) of the rates quoted at approximately 11:00 a.m., New York City time, on
the Reference Rate Determination Date by three major banks in New York City
selected by the Remarketing Dealer for loans in U.S. Dollars to leading European
banks, having a one-month maturity and in a principal amount that is
representative for a single transaction in U.S. dollars in that market at that
time. If the banks selected by the Remarketing Dealer are not providing
quotations in the manner described by this paragraph, the rate for the Floating
Rate Reset Period following the Reference Rate Determination Date will be the
rate in effect on that Reference Rate Determination Date.

     "REFERENCE RATE DETERMINATION DATE" shall be the second day preceding each
Reference Rate Reset Date. In the event the Reference Rate Determination Date
falls on a non-Business Day in London, the interest rate shall reset on the
following Business Day unless such Business Day would move the Reference Rate
Determination Date into the next calendar month, in which case it shall be the
immediately preceding Business Day.

     "REFERENCE RATE RESET DATE" means July 1, 2003 and the first day of each
month thereafter until but excluding the Floating Period Termination Date.

     (iii)  NOTIFICATION OF RESULTS; SETTLEMENT.

     Subject to the Remarketing Dealer's election to remarket the ROARS and to
the Company's election not to exercise its Floating Period Option, as set forth
in subsection (b)(ii) of this Section 3.2, the Remarketing Dealer shall notify
the Company, the Trustee and the U.S. Depository by telephone, confirmed in
writing (which may include facsimile or other electronic transmission), by 4:00
p.m., New York City time, on the Fixed Rate Determination Date of the Interest
Rate to Maturity of the ROARS effective from and including the Fixed Rate
Remarketing Date.

                                       13

<PAGE>   16

SECTION 3.3         REDEMPTION.

     (a)  Mandatory Redemption.

     The Company shall be required to redeem the ROARS in whole on the
applicable Remarketing Date at a price equal to 100% of the aggregate principal
amount of the ROARS, if such Remarketing Date is the first Remarketing Date, or
at the Dollar Price on any subsequent Remarketing Date, plus all accrued and
unpaid interest, if any, to such Remarketing Date, in the event that (i) the
Remarketing Dealer for any reason does not elect by notice to the Company and
the Trustee not later than such Notification Date, to purchase the ROARS for
remarketing on such Remarketing Date, (ii) prior to any Remarketing Date, the
Remarketing Dealer resigns and no successor has been appointed on or before such
Determination Date, (iii) at any time after the Remarketing Dealer elects on the
Notification Date to remarket such ROARS, the Remarketing Dealer elects to
terminate the Remarketing Agreement in accordance with its terms, (iv) the
Remarketing Dealer for any reason does not notify the Company of the Floating
Period Interest Rate or of the Interest Rate to Maturity by 4:00 p.m., New York
City time, on the applicable Determination Date, (v) the Remarketing Dealer for
any reason does not deliver the purchase price of such ROARS to the Trustee on
the Business Day immediately preceding such Remarketing Date or does not
purchase all tendered ROARS on such Remarketing Date, or (vi) the Company for
any reason fails to redeem the ROARS from the Remarketing Dealer following the
Company's election to effect such redemption as set forth in subsection (b) of
this Section 3.3 below.

     (b)  Optional Redemption.

     If the Remarketing Dealer elects to remarket the ROARS, the Company shall
notify the Remarketing Dealer and the Trustee, not later than 4:00 p.m. New York
City time on the Business Day immediately preceding any Determination Date, if
the Company irrevocably elects to exercise its right to redeem the ROARS, in
whole but not in part, from the Remarketing Dealer on the first Remarketing Date
or on the Floating Period Termination Date immediately following such
Determination Date. If the Company so elects to redeem the ROARS, the Company
shall redeem the ROARS in whole on the first Remarketing Date or on the
subsequent Remarketing Date immediately following such Determination Date at the
Dollar Price, in each case, plus accrued and unpaid interest, if any, to such
Remarketing Date.

                                       14

<PAGE>   17

                                   ARTICLE IV
                                  MISCELLANEOUS

SECTION 4.1.        Ratification of Indenture.

     The Indenture as supplemented by this Second Supplemental Indenture, is in
all respects ratified and confirmed, and this Second Supplemental Indenture
shall be deemed part of the Indenture in the manner and to the extent herein and
therein provided.

SECTION 4.2.        Trustee Not Responsible for Recitals.

     The recitals herein contained are made by the Company and not by the
Trustee, and the Trustee assumes no responsibility for the correctness thereof.
The Trustee makes no representation as to the validity or sufficiency of this
First Supplemental Indenture.

SECTION 4.3.        Governing Law.

     This Second Supplemental Indenture and each Security shall be deemed to be
a contract made under the internal laws of the State of New York, and for all
purposes shall be construed in accordance with the laws of said State, without
regard to conflicts of laws principles.

SECTION 4.4.        Separability.

     In case any one or more of the provisions contained in this Second
Supplemental Indenture or in the Securities shall for any reason be held to be
invalid, illegal or unenforceable in any respect, such invalidity, illegality or
unenforceability shall not affect any other provisions of this Second
Supplemental Indenture or of the Securities, but this Second Supplemental
Indenture and the Securities shall be construed as if such invalid or illegal or
unenforceable provision had never been contained herein or therein.

SECTION 4.5.        Counterparts.

     This Second Supplemental Indenture may be executed in any number of
counterparts each of which shall be an original; but such counterparts shall
together constitute but one and the same instrument.

                                       15
<PAGE>   18

     IN WITNESS WHEREOF, the parties hereto have caused this Second Supplemental
Indenture to be duly executed by their respective officers thereunto duly
authorized, on the date or dates indicated in the acknowledgments and as of the
day and year first above written.

                                   SEMCO ENERGY, INC.
                                   as Issuer

                                   By:
                                      ------------------------------------------
                                   Name:  William L. Johnson
                                   Title: Chairman of the Board

                                   BANK ONE TRUST COMPANY, NATIONAL ASSOCIATION,
                                   as Trustee

                                   By:
                                      ------------------------------------------
                                   Name:  Ernest J. Peck
                                   Title: Vice President

                                       16

<PAGE>   19

                                    EXHIBIT A

                                FORM OF SECURITY

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS
CERTIFICATE OR ANY PORTION HEREOF IS REGISTERED IN THE NAME OF CEDE & CO. OR IN
SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY OR SUCH OTHER REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO.), ANY TRANSFER, PLEDGE OR
OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON OTHER THAN THE
DEPOSITORY TRUST COMPANY OR CEDE & CO. IS WRONGFUL INASMUCH AS THE REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT
NOT IN PART, TO NOMINEES OF THE DEPOSITORY TRUST COMPANY OR TO A SUCCESSOR
THEREOF OR SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL
SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS
SET FORTH IN SECTION 305 OF THE INDENTURE REFERRED TO ON THE REVERSE HEREOF.

                               SEMCO ENERGY, INC.

             8.95% REMARKETABLE OR REDEEMABLE SECURITIES (ROARS(sm))
                    DUE 2008 (REMARKETING DATE JULY 1, 2003)

                                                               CUSIP: 78412D AD1

NO. 01

ORIGINAL ISSUE DATE:               June 29, 2000
INTEREST RATE TO
  REMARKETING DATE:                8.95%
REMARKETING DATE                   July 1, 2003

INTEREST RATE TO MATURITY:         See Further Provisions Set Forth Herein
MATURITY DATE:                     July 1, 2008
ISSUE PRICE:                       99.759%

INTEREST PAYMENT DATES:            January 1 and July 1, commencing
                                   January 1, 2001

<PAGE>   20

     SEMCO Energy, Inc., a corporation duly organized and existing under the
laws of the State of Michigan (hereinafter referred to as the "Issuer"), for
value received hereby promises to pay to Cede & Co. or registered assigns the
principal sum of $          Dollars at the Issuer's office or agency for said
purpose initially at the designated corporate trust operations office of Bank
One Trust Company, National Association, as Trustee (the "Trustee") on July 1,
2008 (unless and to the extent earlier redeemed or repaid prior to such maturity
date), or at such other maturity date determined in accordance with the terms
hereof, in such coin or currency of the United States of America as the time of
payment shall be legal tender for the payment of public and private debts, and
to pay interest semi-annually in arrears on January 1 and July 1 of each year,
commencing January 1, 2001, to the Remarketing Date specified above, on said
principal sum in like coin or currency at the Interest Rate to Remarketing Date
specified above, and thereafter, subject to the terms and conditions set forth
herein, at the interest rate determined by the Remarketing Dealer (as defined on
the reverse hereof) in accordance with the procedures set forth on the reverse
hereof ("Floating Rate Spread" or "Interest Date to Maturity"), at said offices
or agencies from the most recent interest payment date to which interest on the
Securities has been paid or duly provided for, unless the date hereof is a date
to which interest on the Securities has been paid or duly provided for, in which
case from the date of this Security, or unless no interest has been paid or duly
provided for on the Securities, in such case from June 29, 2000. Notwithstanding
the foregoing, if the date hereof is after January 1 or July 1, as the case may
be, and before the following January 1 or July 1, this Security shall bear
interest from such January 1 or July 1; provided that if the Issuer shall
default in the payment of interest due on such January 1 or July 1, then this
Security shall bear interest from the immediately preceding January 1 or July 1
to which interest on the Securities has been paid or duly provided for, or, if
no interest has been paid or duly provided for on the Securities, from June 29,
2000.

     The interest so payable on any Interest Payment Date will, except as
otherwise provided in the Indenture (as defined on the reverse hereof), be paid
to the Person in whose name this Security is registered at the close of business
on the fifteenth calendar day (whether or not a Business Day) immediately
preceding such Interest Payment Date; provided, that principal and interest
shall be paid by mailing a check for such to or upon the written order of the
registered Holders of Securities entitled thereto at their last address as it
appears on the Securities Register or, upon written application to the Trustee
by a Holder of $1,000,000 or more in aggregate principal amount of Securities,
by wire transfer of immediately available funds to an account maintained by such
Holder with a bank or other financial institution. Interest on this Security
shall be computed on the basis of a 360-day year of twelve 30-day months.

     Interest on overdue principal and (to the extent permitted by applicable
law) on overdue installments of interest shall accrue at the then applicable
interest rate of this Security.

     Reference is made to the further provisions set forth on the reverse
hereof. Such further provisions shall for all purposes have the same effect as
though fully set forth at this place.

     This Security shall not be entitled to any benefit under the Indenture, or
be valid or obligatory, until the certificate of authentication hereof shall
have been duly signed by the Trustee acting under the Indenture.

                                       2

<PAGE>   21

IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly executed
under its corporate seal.

                                        SEMCO ENERGY, INC., as Issuer

[Seal]

ATTEST:                                 By
                                              ----------------------------------
                                        Name:
                                              ----------------------------------
By:                                     Title:
   -------------------------------            ----------------------------------
     Name:
     Title:

Dated:

                     TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities referred to in the within-mentioned Indenture.

                                        Bank One Trust Company, National
                                        Association

Dated:
                                        --------------------------------------
                                        Authorized Signatory

                                       3

<PAGE>   22

                               REVERSE OF SECURITY

                               SEMCO ENERGY, INC.

             8.95% Remarketable or Redeemable Securities (ROARS(sm))
                    Due 2008 (Remarketing date July 1, 2003)

     This Security is one of a duly authorized issue of debt securities of the
Issuer, limited to the aggregate principal amount of $160,000,000 (except as
otherwise provided in the Indenture mentioned below), issued or to be issued
pursuant to an Indenture dated as of October 23, 1998, as supplemented by a
First and Second Supplemental Indenture (the "Indenture"), duly executed and
delivered by the Issuer to the Trustee. Reference is hereby made to the
Indenture and all indentures supplemental thereto for a description of the
rights, limitations of rights, obligations, duties and immunities thereunder of
the Trustee, the Issuer and the Holders (the words "Holders" or "Holder" meaning
the registered holders or registered holder) of the Securities. Capitalized
terms used herein, but not otherwise defined herein, shall have the meanings
assigned to them in the Indenture.

     Certain provisions relating to the remarketing of the Securities set forth
below are contained in a Remarketing Agreement (the "Remarketing Agreement")
between the Issuer and Banc of America Securities LLC, as Remarketing Dealer
(the "Remarketing Dealer").

     The Securities shall accrue interest from the Fixed Rate Remarketing Date,
semi-annually on each day that is a six-month anniversary of such date. Interest
on the Securities from the Fixed Rate Remarketing Date shall be computed on the
basis of a 360-day year consisting of twelve 30-day months. Interest on the
Securities accruing during the Floating Rate Reset Period (as defined below)
shall be payable on the next following Reference Rate Reset Date. Interest on
the Securities during the Floating Rate Period shall be computed on the basis of
the actual number of days in such Floating Rate Period over a 360-day year.

     "FIXED RATE REMARKETING DATE" means July 1, 2003, assuming the Remarketing
Dealer has elected to purchase the Securities and the Issuer has not elected to
exercise its Floating Period Option, or the subsequent Remarketing Date in the
event that the Issuer has elected to exercise its Floating Period Option.

     "REMARKETING DATE(S)" means July 1, 2003 assuming that the Remarketing
Dealer has elected to purchase the ROARS and the Company has not elected to
exercise its Floating Period Option on July 1, 2003 and one of the first days of
each month thereafter, until July 1, 2004 if the Company has elected to exercise
its Floating Period Option.

     If the Remarketing Dealer gives notice to the Company and the Trustee no
earlier than 20 Business Days prior to the first Remarketing Date and not later
than 4:00 p.m., New York City time, on the 15th Business Day prior to the first
Remarketing Date, of its intention to purchase the Securities for remarketing on
such Remarketing Date (the "Notification Date"), the Securities

                                       1

<PAGE>   23

shall be subject to mandatory tender to the Remarketing Dealer, and the
Remarketing Dealer shall be obligated to purchase the Securities, for
remarketing on such Remarketing Date, subject in each case to the conditions
described herein and set forth in the Remarketing Agreement. The purchase price
for the tendered Securities shall equal 100% of the principal amount thereof and
the Issuer will pay accrued interest, if any, on the Securities to such
Remarketing Date. From and after the first Remarketing Date, the Securities
shall bear interest at either the Floating Rate Spread or the Interest Rate to
Maturity as specified herein. If the Remarketing Dealer elects to remarket the
Securities, the obligation of the Remarketing Dealer to purchase the Securities
on the applicable Remarketing Date is subject to the conditions specified in the
Remarketing Agreement. If for any reason the Remarketing Dealer does not
purchase all of the Securities on the first Remarketing Date, the Issuer shall
be required to repurchase from the registered holders thereof, and the
registered holders will be required to sell to the Issuer, all the Securities at
a price equal to the principal amount thereof plus all accrued and unpaid
interest, if any, if such Remarketing Date is the first Remarketing Date, or at
the Dollar Price, plus accrued and unpaid interest, if any, on any subsequent
Remarketing Date.

     If the Remarketing Dealer elects to repurchase the Securities by 3:30 p.m.,
New York City time, on the third Business Day immediately preceding any
Remarketing Date (a "Floating Rate Spread Determination Date" or the "Fixed Rate
Determination Date" depending on the Issuer's election, each a "Determination
Date") the Remarketing Dealer shall determine the Floating Rate Spread in the
case that the Issuer has elected the Floating Period Option, or otherwise the
Interest Rate to Maturity to the nearest one hundredth (0.01) of one percent per
annum unless the Issuer has chosen to redeem, or is required to redeem, the
Securities. Each Floating Period Interest Rate will equal the sum of a Reference
Rate and a Floating Rate Spread. The Interest Rate to Maturity shall be equal to
the sum of 6.50% (the "Base Rate") and the Applicable Spread (as defined below),
which will be based on the Dollar Price (as defined below) of the Securities.
The Interest Rate to Maturity announced by the Remarketing Dealer, absent
manifest error, shall be binding and conclusive upon the holders of beneficial
interests in the Securities (the "Beneficial Owners"), the Issuer and the
Trustee.

     "APPLICABLE SPREAD" will be the lowest Bid (as defined below), expressed as
a spread (in the form of a percentage or in basis points) above the Base Rate,
obtained by the Remarketing Dealer by 3:30 p.m., New York City time, on the
Fixed Rate Determination Date from the Bids quoted to the Remarketing Dealer by
five Reference Corporate Dealers (as defined below). If fewer than five
Reference Corporate Dealers submit Bids as described above, then the Applicable
Spread shall be the lowest such Bid obtained as described above. A "Fixed Rate
Bid" will be an irrevocable offer to purchase the total aggregate outstanding
principal amount of the Securities at the Dollar Price (as defined below), but
assuming (i) a settlement date that is the Fixed Rate Remarketing Date
applicable to such Securities, without accrued interest, (ii) a maturity date
that is the fifth anniversary of the Fixed Rate Remarketing Date and (iii) a
stated annual interest rate equal to the relevant Base Rate plus the spread bid
by the applicable Reference Corporate Dealer.

     "COMPARABLE TREASURY ISSUES" means the U.S. Treasury security or securities
selected by the Remarketing Dealer, as of the first Remarketing Date, as having
an actual or interpolated maturity or maturities comparable to the remaining
term of the Securities being purchased by the Remarketing Dealer.

                                       2

<PAGE>   24

     "COMPARABLE TREASURY PRICE" means, with respect to the first Remarketing
Date, (i) the offer prices for the Comparable Treasury Issues (expressed, in
each case, as a percentage of its principal amount) at 12:00 noon, New York City
time, on the first Determination Date, as set forth on "Telerate Page 500" (or
such other page as may replace "Telerate Page 500"), or (ii) if such page (or
any successor page) is not displayed or does not contain such offer prices on
the first Determination Date, (A) the average of the Reference Treasury Dealer
Quotations (is defined below) for the first Remarketing Date, after excluding
the highest and lowest such Reference Treasury Dealer Quotations, or (B) if the
Remarketing Dealer obtains fewer than four such Reference Treasury Dealer
Quotations, the average of all such Reference Treasury Dealer Quotations.
"Telerate Page 500" means the display designated as "Telerate Page 500" on Dow
Jones Markets (or such other page as may replace Telerate Page 500 on such
service) or such other service displaying the offer prices specified in clause
(i) above as may replace Dow Jones Markets. "Reference Treasury Dealer
Quotations" means, with respect to each Reference Treasury Dealer and the Fixed
Rate Remarketing Date, the offer prices for the Comparable Treasury Issues
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Remarketing Dealer by such Reference Treasury Dealer by 3:30
p.m., New York City time, on the first Determination Date.

     "DOLLAR PRICE" means, with respect to the Securities, the present value, as
of the first Remarketing Date, of the Remaining Scheduled Payments for such
Securities discounted to the Remarketing Date on a semi-annual basis (assuming a
360-day year consisting of twelve 30-day months) at the Treasury Rate (as
defined below).

     "FIXED RATE DETERMINATION DATE" means the third Business Day prior to the
Fixed Rate Remarketing Date.

     "REFERENCE CORPORATE DEALER" means a leading dealer of publicly traded debt
securities, including debt securities of the Issuer, which shall be selected by
the Issuer. The Issuer shall advise the Remarketing Dealer of its selection of
Reference Corporate Dealers no later than five Business Days prior to the Fixed
Rate Remarketing Date. One of such Reference Corporate Dealers selected by the
Issuer shall be Banc of America Securities LLC if it is then the Remarketing
Dealer.

     "REFERENCE TREASURY DEALER" means five dealers to be selected by the
Issuer, and their respective successors; provided that if any of the foregoing
on their affiliates ceases to be a primary U.S. Government securities dealer (a
"Primary Treasury Dealer"), the Issuer shall substitute therefor another Primary
Treasury Dealer. One of such Reference Treasury Dealers selected by the Issuer
shall be Banc of America Securities LLC if it is then the Remarketing Dealer.

     "REMAINING SCHEDULED PAYMENTS" means, with respect to the Securities, the
remaining scheduled payments of the principal thereof and interest thereon,
calculated at the Base Rate applicable to such Securities, that would be due
after the first Remarketing Date to

                                       3

<PAGE>   25

and including the Stated Maturity Date; provided that if such Remarketing Date
is not an Interest Payment Date with respect to such Securities, the amount of
the next succeeding scheduled interest payment thereon, calculated at the Base
Rate, will be reduced by the amount of interest accrued thereon, calculated at
such Base Rate only, to the first Remarketing Date.

     "TREASURY RATE" means with respect to the first Remarketing Date, the rate
per annum equal to the semi-annual equivalent yield to maturity or interpolated
(on a day count basis) yield to maturity of the Comparable Treasury Issues,
assuming a price for the Comparable Treasury Issues (expressed as a percentage
of their principal amounts) equal to the Comparable Treasury Price for such
Remarketing Date.

     Subject to the Remarketing Dealer's election to purchase the Securities,
but prior to the fourth Business Day prior to the first Remarketing Date (the
"Floating Period Notification Date"), the Issuer may elect to exercise its
Floating Period Option (as defined below). Under these circumstances, the
Securities shall be remarketed at a floating rate for a period of one year, or
until such date which otherwise would be the Reference Rate Reset Date following
the date on which the Issuer elects to terminate such Floating Rate Period (the
"Floating Rate Period Termination Notification Date"), whichever is sooner (the
"Floating Period Termination Date"). In the event that the Issuer elects to
exercise its Floating Period Option, the maturity of the Securities will be
extended to the fifth anniversary of the Fixed Rate Remarketing Date not to
exceed July 1, 2009.

     The amount of the interest for each day that the Securities are outstanding
during the Floating Rate Period will be calculated by dividing the Floating Rate
Interest Rate in effect for such day by 360 and multiplying the result by the
Dollar Price. The amount of interest to be paid for any Floating Rate Reset
Period (as defined below) will be calculated by adding the daily interest
amounts for each day in the Floating Rate Reset Period. The Floating Period
Interest Rate for the Securities announced by the Remarketing Dealer, absent
manifest error, shall be binding and conclusive upon the holders of beneficial
interests in such Securities (the "Beneficial Owners"), the Issuer and the
Trustee.

     "FLOATING PERIOD INTEREST RATE" means the sum of the Reference Rate and the
Floating Rate Spread.

     "FLOATING PERIOD OPTION" means the Issuer's right, on any date subsequent
to the Remarketing Dealer's election to purchase the Securities but prior to the
fourth Business Day prior to the first Remarketing Date, to require the
Remarketing Dealer to remarket the Securities at the Floating Period Interest
Rate.

     "FLOATING RATE PERIOD" means the period from (and including) the Floating
Rate Remarketing Date to (but excluding) the Floating Rate Termination Date.

     "FLOATING RATE SPREAD DETERMINATION DATE" means the third Business Day
prior to the Floating Rate Remarketing Date.

                                       4

<PAGE>   26

     "FLOATING RATE REMARKETING DATE" means July 1, 2003 in the event the
Company has elected to exercise its Floating Period Option.

     "FLOATING RATE RESET PERIOD" means the period from (and including) the
first Reference Rate Reset Date (as defined below) to (but excluding) the next
following Reference Rate Reset Date and thereafter the period from (and
including) a Reference Rate Reset Date to (but excluding) the next following
Reference Rate Reset Date; provided that the final Floating Rate Reset Period
shall run to (but exclude) the Floating Period Termination Date.

     "FLOATING RATE SPREAD" shall be the lowest Bid expressed as a spread (in
the form of a percentage or in basis points) above the Reference Rate for the
Securities, obtained by the Remarketing Dealer at 3:30 p.m., New York City time,
on the third Business Day prior to the Floating Rate Remarketing Date, from the
Bids quoted to the Remarketing Dealer by five Reference Money Market Dealers. If
fewer than five Reference Money Market Dealers submit Bids, then the Floating
Rate Spread shall be the lowest such Bid obtained. A "Floating Rate Bid" will be
an irrevocable offer to purchase the total aggregate outstanding principal
amount of the Securities at the Dollar Price, but assuming (i) a settlement date
that is the Floating Rate Remarketing Date, without accrued interest, (ii) a
maturity date equal to the Floating Period Termination Date, (iii) a stated
annual interest rate equal to the Reference Rate plus the Floating Rate Spread,
(iv) that the Securities are callable by the Remarketing Dealer, at the Dollar
Price, on any Reference Rate Reset Date after the first Remarketing Date or on
the Floating Period Termination Date and (v) that the Securities will be
repurchased by the Issuer at the Dollar Price on the Floating Period Termination
Date, if not previously called by the Remarketing Dealer.

     "REFERENCE MONEY MARKET DEALER" means each of up to five leading dealers of
publicly traded debt securities, including debt securities of the Issuer, which
shall be selected by the Issuer, who are also leading dealers in money market
instruments. The Issuer shall advise the Remarketing Dealer of its selection of
Reference Money Market Dealers no later than five Business Days prior to the
Floating Rate Remarketing Date. One of such Reference Money Market Dealers
selected by the Issuer shall be Banc of America Securities LLC, if it is then
the Remarketing Dealer.

     "REFERENCE RATE" means the rate for each Floating Rate Reset Period which
shall be the rate for deposits in U.S. Dollars for a period of one month which
appears on the Telerate Page 3750 (or any successor page) as of 11:00 a.m.,
London time, on the applicable Reference Rate Determination Date (as defined
below). If no rate appears on Telerate Page 3750 on the Reference Rate
Determination Date, the Remarketing Dealer will request the principal London
offices of four major reference banks in the London Inter-Bank Market, to
provide it with its offered quotation for deposits in U.S. dollars for the
period of one month, commencing on the first day of the Floating Rate Reset
Period, to prime banks in the London Inter-Bank Market at approximately 11:00
a.m., London time, on that Reference Rate Determination Date and in a principal
amount that is representative for a single transaction in U.S. Dollars in that
market at that time. If at least two quotations are provided, then the Reference
Rate will be the average of those quotations. If fewer than two quotations are
provided, then the Reference Rate will be the average (rounded, if necessary, to
the nearest one hundredth of a percent) of the rates quoted at approximately
11:00 a.m., New York City time, on the Reference Rate Determination Date by

                                       5

<PAGE>   27

three major banks in New York City selected by the Remarketing Dealer for loans
in U.S. Dollars to leading European banks, having a one-month maturity and in a
principal amount that is representative for a single transaction in U.S. Dollars
in that market at that time. If the banks selected by the Remarketing Dealer are
not providing quotations in the manner described by this paragraph, the rate for
the Floating Rate Reset Period following the Reference Rate Determination Date
will be the rate in effect on that Reference Rate Determination Date.

     "REFERENCE RATE DETERMINATION DATE" shall be the second day preceding each
Reference Rate Reset Date. In the event the Reference Rate Determination Date
falls on a non-Business Day in London, the interest rate shall reset on the
following Business Day unless such Business Day would move the Reference Rate
Determination Date into the next calendar month, in which case it shall be the
immediately preceding Business Day.

     "REFERENCE RATE RESET DATE" means July 1, 2003 and the first day of each
month thereafter until but excluding the Floating Period Termination Date.

     Provided the Remarketing Dealer has previously notified the Issuer and the
Trustee on the Notification Date of its intention to purchase all Securities on
the first Remarketing Date and subject to the Issuer's right to redeem the
Securities from the Remarketing Dealer on such Remarketing Date as set forth
below, the Remarketing Dealer will notify the Issuer, the Trustee and the U.S.
Depository by telephone, confirmed in writing (which may include facsimile or
other electronic transmission), by 4:00 p.m., New York City time, on the Fixed
Rate Determination Date, of the Interest Rate to Maturity effective from and
including the Fixed Rate Remarketing Date. All of the tendered Securities shall
be automatically delivered to the account of the Trustee, by book-entry through
DTC pending payment of the purchase price therefor, on the first Remarketing
Date.

     In the event that the Securities are remarketed as provided herein, the
Remarketing Dealer shall pay to the Trustee, not later than 12:00 noon, New York
City time, on the first Remarketing Date, an amount equal to 100% of the
aggregate principal amount of the Securities or on any subsequent Remarketing
Date, an amount equal to the Dollar Price. On any such Remarketing Date, the
Remarketing Dealer shall cause the Trustee to make payment to the DTC
participant of each Beneficial Owner of Securities, by book-entry through DTC of
such Beneficial Owner's tendered Securities, of 100% of the principal amount of
the tendered Securities that have been purchased for remarketing by the
Remarketing Dealer. If the Remarketing Dealer does not purchase all of the
Securities on the first Remarketing Date or any subsequent Remarketing Date, the
Issuer shall make or cause to be made such payment for the Securities as
provided herein. In any case, the Issuer shall make, or cause the Trustee to
make, payment of interest on the Securities due on a Remarketing Date in
accordance with the Indenture by book-entry through DTC no later than the close
of business on such Remarketing Date.

     The transactions specified above shall be executed on any Remarketing Date
through DTC in accordance with the procedures of DTC, and the accounts of the
respective DTC participants will be debited and credited and the Securities
delivered by book-entry as necessary to effect the purchases and sales thereof.

                                       6

<PAGE>   28

     The tender and settlement procedures set forth above, including provisions
for payment by purchasers of Securities in the remarketing or for payment to
selling Beneficial Owners of Securities, may be modified to the extent required
by DTC or to the extent required to facilitate the tender and remarketing of
Securities at the time of the remarketing. In addition, the Remarketing Dealer
may, without the consent of holders or Beneficial Owners of the Securities,
modify the tender and settlement procedures specified above in order to
facilitate the tender and settlement process.

     The Issuer shall be required to redeem the Securities in whole on the
applicable Remarketing Date at a price equal to 100% of the aggregate principal
amount of the Securities, if such Remarketing Date is the first Remarketing
Date, or at the Dollar Price on any subsequent Remarketing Date, plus all
accrued and unpaid interest, if any, to such Remarketing Date, in the event that
(i) the Remarketing Dealer for any reason does not elect by notice to the Issuer
and the Trustee not later than such Notification Date, to purchase the
Securities for remarketing on such Remarketing Date, (ii) prior to any
Remarketing Date, the Remarketing Dealer resigns and no successor has been
appointed on or before such Determination Date, (iii) at any time after the
Remarketing Dealer elects on the Notification Date to remarket such Securities,
the Remarketing Dealer elects to terminate the Remarketing Agreement in
accordance with its terms, (iv) the Remarketing Dealer for any reason does not
notify the Issuer of the Floating Period Interest Rate or of the Interest Rate
to Maturity by 4:00 p.m., New York City time, on the applicable Determination
Date, (v) the Remarketing Dealer for any reason does not deliver the purchase
price of such Securities to the Trustee on the Business Day immediately
preceding such Remarketing Date or does not purchase all tendered Securities on
such Remarketing Date, or (vi) the Issuer for any reason fails to redeem the
Securities from the Remarketing Dealer following the Issuer's election to effect
such redemption.

     If the Remarketing Dealer elects to remarket the Securities on the first
Remarketing Date, then not later than 4:00 p.m., New York City time, on the
Business Day immediately preceding any Determination Date, the Issuer shall
notify the Remarketing Dealer and the Trustee if the Issuer irrevocably elects
to exercise its right to redeem the Securities, in whole but not in part, from
the Remarketing Dealer on the first Remarketing Date or on the Floating Period
Termination Date immediately following such Determination Date at the Dollar
Price. In any case, payment of the Dollar Price, plus accrued and unpaid
interest therefor, will be made by the Issuer to the account designated by the
Remarketing Dealer by wire transfer in same-day funds on such Remarketing Date.

     In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of all the Securities may be declared
due and payable, in the manner and with the effect, and subject to the
conditions, provided in the Indenture.

     The Indenture contains provisions permitting the Insurer and the Trustee,
with the consent of the Holders of not less than a majority in aggregate
principal amount of the Securities of each series affected at the time
Outstanding, as defined in the Indenture, to execute supplemental indentures for
the purpose of, among other things, adding any provisions to or changing in any
manner or eliminating any of the provisions of the Indenture or of any

                                       7

<PAGE>   29

supplemental indenture or of modifying in any manner the rights of the Holders
of the Securities; provided, however, that, among other things, no such
supplemental indenture shall (i) reduce the principal amount thereof, or reduce
the rate or extend the time of payment of interest thereon, or reduce any
premium payable upon the redemption thereof, without the consent of the Holder
of each Security so affected, or (ii) reduce the aforesaid percentage of
Securities, the Holders of which are required to consent to any such
supplemental indenture, without the consent of the Holders of each Security then
outstanding and affected thereby. The Indenture also contains provisions
permitting the Holders of a majority in aggregate principal amount of the
Securities of any series at the time Outstanding affected thereby, on behalf of
all of the Holders of the Securities of such series, to waive a Default or Event
of Default with respect to such series, and its consequences, except a Default
or Event of Default in the payment of the principal of or premium, if any, or
interest on any of the Securities of such series or a Default in respect of a
provision that under Article Nine of the Indenture cannot be modified or amended
without the consent of each holder affected thereby. Any such consent or waiver
by the registered Holder of this Security (unless revoked as provided in the
Indenture) shall be conclusive and binding upon such Holder and upon all future
Holders and owners of this Security and of any Security issued in exchange for
or in place hereof (whether by registration of transfer or otherwise),
irrespective of whether or not any notation of such consent or waiver is made
upon this Security.

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Issuer, which is
absolute and unconditional, to pay the principal of, and interest on, this
Security at the place, times, and rate, and in the currency, herein prescribed.

     The Securities are issuable only as registered Securities without coupons
denominations of $1,000 and any integral multiple of $1,000 in excess thereof.

     At the office or agency of the issuer referred to on the face hereof and in
the manner subject to the limitations provided in the Indenture, Securities may
be presented for exchange for a like aggregate principal amount of Securities of
other authorized denominations.

     Upon due presentment for registration of transfer of this Security at the
above-mentioned office or agency of the Issuer, a new Security or Securities of
authorized denominations, for a like aggregate principal amount, will be issued
to the transferee as provided in the Indenture. No service charge shall be made
for any such transfer, but the Issuer may require payment of a sum sufficient to
cover any tax or other governmental charge that may be imposed in relation
thereto.

     The Issuer, the Trustee, and any authorized agent of the Issuer or the
Trustee, may deem and treat the registered Holder hereof as the absolute owner
of this Security (whether or not this Security shall be overdue and
notwithstanding any notation of ownership or other writing hereon made by anyone
other than the Issuer or the Trustee or any authorized agent of the Issuer or
the Trustee), for the purpose of receiving payment of, or on account of, the
principal hereof and premium, if any, and, subject to the provisions on the face
hereof, interest hereon and for all other purposes, and neither the Issuer nor
the Trustee nor any authorized agent of the Issuer or the Trustee shall be
affected by any notice to the contrary.

                                       8

<PAGE>   30

     No recourse shall be had for the payment of the principal of, and interest
on, this Security, for any claim based hereon, or otherwise in respect hereof,
or based on or in respect of the Indenture or any indenture supplemental
thereto, against any incorporator, shareholder, officer or director, as such,
past, present or future, of the Issuer or of any successor corporation, either
directly or through the Issuer or any successor corporation, whether by virtue
of any constitution, statute or rule of law or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by the acceptance
hereof and as part of the consideration for the issue hereof, expressly waived
and released.

                                       9

<PAGE>   31

                               FORM OF ASSIGNMENT

I or we assign and transfer this Security to:

             (Insert assignee's social security or tax I.D. number)

(Print or type name, address and zip code of assignee) and irrevocably appoint:

Agent to transfer this Security on the books of the Issuer. The Agent may
substitute another to act for him.

Date:                                 Your Signature

                                      (Sign  exactly  as your name  appears on
                                      the other side of this Security)

                         *Signature Guarantee:

                         *Signatures must be guaranteed by an "eligible
                         guarantor institution" meeting the requirements of
                         the Registrar, which requirements include
                         membership or participation in STAMP or such other
                         "signature guarantee program" as may be determined by
                         the Registrar in addition to, or in substitution for,
                         STAMP, all in accordance with the Securities Exchange
                         Act of 1934.

                                       10<PAGE>   1
                                                                     EXHIBIT 4.2
                                                                  Execution Copy

================================================================================

                               MCE COMPANIES, INC.

                                CREDIT AGREEMENT

                            DATED AS OF JULY 29, 1999

                             COMERICA BANK, AS AGENT

================================================================================

<PAGE>   2

                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                               Page

<S>                                                                                                            <C>
         1.       DEFINITIONS.....................................................................................1

         2.       REVOLVING CREDIT...............................................................................20
                  2.1        Revolving Credit Commitment.........................................................20
                  2.2        Accrual of Interest and Maturity....................................................20
                  2.3        Prime-based Interest Payments.......................................................20
                  2.4        Eurodollar-based Interest Payments..................................................20
                  2.5        Interest Payments on Conversions....................................................21
                  2.6        Interest on Default.................................................................21
                  2.7        Requests for Advances and Requests for Refundings and Conversions of
                             Revolving Credit Advances...........................................................21
                  2.8        Disbursement of Revolving Credit Advances...........................................23
                  2.9        Prime-based Advance in Absence of Election or Upon Default..........................24
                  2.10       Prepayment..........................................................................24
                  2.11       Revolving Credit Commitment Fee.....................................................25
                  2.12       Reduction of Indebtedness; Revolving Credit Aggregate
                             Commitment..........................................................................25
                  2.13       Optional Reduction or Termination of Revolving Credit Aggregate
                             Commitment..........................................................................25
                  2.14       Extension of Revolving Credit Maturity Date.........................................26
                  2.15       Use of Revolving Credit Proceeds....................................................26

         3.       LETTERS OF CREDIT..............................................................................27
                  3.1        Letters of Credit...................................................................27
                  3.2        Conditions to Issuance..............................................................27
                  3.3        Notice..............................................................................29
                  3.4        Letter of Credit Fees...............................................................29
                  3.5        Issuance Fees.......................................................................30
                  3.6        Draws and Demands for Payment Under Letters of Credit...............................30
                  3.7        Obligations Irrevocable.............................................................31
                  3.8        Risk Under Letters of Credit........................................................32
                  3.9        Indemnification.....................................................................33
                  3.10       Right of Reimbursement..............................................................34

         4.       SWING LINE CREDIT..............................................................................34
                  4.1        Swing Line Advances.................................................................34
                  4.2        Accrual of Interest.................................................................35
                  4.3        Prime-based Interest Payments.......................................................35
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                  4.4        Quoted Rate Advance Interest Payments...............................................35
                  4.5        Interest on Default.................................................................35
                  4.6        Requests for Swing Line Advances....................................................35
                  4.7        Disbursement of Swing Line Advances.................................................37
                  4.8        Prepayment..........................................................................37
                  4.9        Refunding of or Participation Interest in Swing Line Advances.......................37

         5.       TERM CREDIT....................................................................................38
                  5.1        Term Loan...........................................................................38
                  5.2        Repayment...........................................................................38
                  5.3        Disbursement of Term Loan...........................................................39
                  5.4        Interest............................................................................39
                  5.5        Interest Periods....................................................................40
                  5.6        Conversion of Loans.................................................................40
                  5.7        Optional Prepayments................................................................41
                  5.8        Mandatory Prepayment of Term Loans..................................................41
                  5.10       Use of Term Loan Proceeds...........................................................42

         6.       CONDITIONS.....................................................................................42
                  6.1        Execution of Loan Documents.........................................................42
                  6.2        Corporate Authority.................................................................42
                  6.3        Collateral Documents................................................................42
                  6.4        Licenses, Permits, Etc..............................................................43
                  6.5        Representations and Warranties......................................................43
                  6.6        Compliance with Certain Documents and Agreements....................................43
                  6.7        Opinion of Counsel..................................................................43
                  6.8        No Default..........................................................................44
                  6.9        Transaction Documents...............................................................44
                  6.10       Insurance...........................................................................44
                  6.11       Pro Forma Balance Sheet and Projections.............................................44
                  6.12.      [Intentionally Left Blank]..........................................................44
                  6.13       Real Estate Documentation...........................................................44
                  6.14       Company's Certificate...............................................................45
                  6.15       Payment of Fees.....................................................................45
                  6.16       Other Documents and Instruments.....................................................45
                  6.17       Continuing Conditions...............................................................45

         7.       REPRESENTATIONS AND WARRANTIES.................................................................46
                  7.1        Due Authorization--Company..........................................................46
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                                   (Continued)
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                  7.2        Due Authorization--Guarantors.......................................................46
                  7.3        Non-Contravention...................................................................46
                  7.4        No Litigation.......................................................................46
                  7.5        Encumbrances........................................................................47
                  7.6        ERISA...............................................................................47
                  7.7        Financial Statements................................................................47
                  7.8        Financial Projections...............................................................47
                  7.9        Tax Returns.........................................................................47
                  7.10       Subsidiaries........................................................................47
                  7.11       Compliance with Laws................................................................48
                  7.12       No Defaults.........................................................................48
                  7.13       Consents, Approvals and Filings, Etc................................................49
                  7.14       Agreements Affecting Financial Condition............................................49
                  7.15       Labor Relations.....................................................................49
                  7.16       Existing Debt.......................................................................49
                  7.17       Solvency............................................................................49
                  7.18       Capitalization......................................................................50
                  7.19       Year 2000 Requirement...............................................................50
                  7.20       No Investment Company or Margin Stock...............................................51
                  7.21       Good Title--Company.................................................................51
                  7.22       Good Title--Guarantors..............................................................51

         8.       AFFIRMATIVE COVENANTS..........................................................................51
                  8.1        Financial Statements................................................................51
                  8.2        Certificates; Other Information.....................................................52
                  8.3        Payment of Obligations..............................................................52
                  8.4        Conduct of Business and Maintenance of Existence....................................52
                  8.5        Inspection of Property; Books and Records, Discussions..............................53
                  8.6        Notices.............................................................................53
                  8.7        Governmental and Other Approvals....................................................54
                  8.8        Security............................................................................54
                  8.9        Defense of Collateral...............................................................54
                  8.10       Bank Accounts.......................................................................54
                  8.11       Further Assurances..................................................................54
                  8.12       Taxes...............................................................................54
                  8.13       Insurance...........................................................................54
                  8.14       Compliance with ERISA...............................................................55
                  8.15       ERISA Notices.......................................................................55
                  8.16       Maintain Consolidated Adjusted Net Worth............................................55
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                                   (Continued)
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                  8.17       Maintain Total Debt to EBITDA Ratio.................................................56
                  8.18       Maintain Fixed Charge Coverage Ratio................................................56
                  8.19       Maintain Senior Debt to EBITDA Ratio................................................56
                  8.20       Environmental Compliance............................................................57
                  8.21       Subsidiaries; Guaranty..............................................................58

         9.       NEGATIVE COVENANTS.............................................................................58
                  9.1        Capital Structure and Redemptions...................................................59
                  9.2        Mergers or Dispositions.............................................................59
                  9.3        Guaranties..........................................................................59
                  9.4        Indebtedness........................................................................59
                  9.5        Acquisitions........................................................................60
                  9.6        Investments.........................................................................60
                  9.7        Liens...............................................................................61
                  9.8        Accounts Receivable.................................................................61
                  9.9        Business Purposes...................................................................61
                  9.10       Dividends...........................................................................61
                  9.11       Capital Expenditures................................................................61
                  9.12       Transactions with Affiliates........................................................62
                  9.13       Limitation on Negative Pledge Clauses...............................................62
                  9.14       Prepayment of Debts.................................................................62
                  9.15       Subordinated Debt...................................................................62
                  9.16       Modification of Certain Agreements..................................................62

         10.      DEFAULTS.......................................................................................62
                  10.1       Events of Default...................................................................62
                  10.2       Exercise of Remedies................................................................64
                  10.3       Rights Cumulative...................................................................65
                  10.4       Waiver by Company of Certain Laws...................................................65
                  10.5       Waiver of Defaults..................................................................65
                  10.6       Set Off.............................................................................65

         11.      PAYMENTS, RECOVERIES AND COLLECTIONS...........................................................66
                  11.1       Payment Procedure...................................................................66
                  11.2       Application of Proceeds.............................................................67
                  11.3       Pro-rata Recovery...................................................................67
                  11.4       Set Off.............................................................................68

         12.      CHANGES IN LAW OR CIRCUMSTANCES; INCREASED COSTS; MARGIN
</TABLE>

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                                   (Continued)
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                  ADJUSTMENTS....................................................................................68
                  12.1       Reimbursement of Prepayment Costs...................................................68
                  12.2       Agent's Eurodollar Lending Office...................................................69
                  12.3       Circumstances Affecting Eurodollar-based Rate Availability..........................69
                  12.4       Laws Affecting Eurodollar-based Rate Availability...................................69
                  12.5       Increased Costs.....................................................................70
                  12.6       [Reserved]..........................................................................71
                  12.7       Other Increased Costs...............................................................71
                  12.8       Margin Adjustments..................................................................71

         13.      AGENT..........................................................................................72
                  13.1       Appointment of Agent................................................................72
                  13.2       Deposit Account with Agent..........................................................72
                  13.3       Scope of Agent's Duties.............................................................73
                  13.4       Successor Agent.....................................................................73
                  13.5       Loans by Agent......................................................................74
                  13.6       Credit Decisions....................................................................74
                  13.7       Agent's Fees........................................................................74
                  13.8       Authority of Agent to Enforce Notes, This Agreement and other Loan
                             Documents...........................................................................74
                  13.9       Indemnification.....................................................................74
                  13.10      Knowledge of Default................................................................75
                  13.11      Agent's Authorization; Action by Banks..............................................75
                  13.12      Enforcement Actions by the Agent....................................................75
                  13.13      Collateral Matters..................................................................76

         14.      MISCELLANEOUS..................................................................................76
                  14.1       Accounting Principles...............................................................76
                  14.2       Consent to Jurisdiction.............................................................76
                  14.3       Law of Michigan.....................................................................77
                  14.4       Interest............................................................................77
                  14.5       Closing Costs and Other Costs.......................................................77
                  14.6       Notices.............................................................................78
                  14.7       Further Action......................................................................79
                  14.8       Successors and Assigns; Participations; Assignments.................................79
                  14.9       Indulgence..........................................................................82
                  14.10      Counterparts........................................................................82
                  14.11      Amendment and Waiver................................................................82
                  14.12      Taxes and Fees......................................................................83
</TABLE>

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                                   (Continued)
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                  14.13      Confidentiality.....................................................................83
                  14.14      Withholding Taxes...................................................................83
                  14.15      WAIVER OF JURY TRIAL................................................................84
                  14.16      Complete Agreement; Conflicts.......................................................84
                  14.17      Severability........................................................................84
                  14.18      Table of Contents and Headings......................................................84
                  14.19      Construction of Certain Provisions..................................................84
                  14.20      Independence of Covenants...........................................................85
                  14.21      Reliance on and Survival of Various Provisions......................................85
                  14.22      Effective Upon Execution............................................................85
</TABLE>

<PAGE>   8

                                TABLE OF CONTENTS
                                   (Continued)

      EXHIBITS

         A        FORM OF REQUEST FOR REVOLVING CREDIT ADVANCE

         B        FORM OF REVOLVING CREDIT NOTE

         C        FORM OF NOTICE OF LETTERS OF CREDIT

         D        FORM OF REQUEST FOR SWING LINE ADVANCE

         E        FORM OF SWING LINE NOTE

         F        FORM OF SWING LINE PARTICIPATION CERTIFICATE

         G        FORM OF NOTICE OF TERM RATE

         H        FORM OF TERM NOTE

         I        PERCENTAGES

         J        PENSION PLANS

         K        FORM OF COVENANT COMPLIANCE AND INTEREST RATE
                  ADJUSTMENT REPORT

         L        FORM OF ASSIGNMENT AGREEMENT

         M        FORM OF BORROWING BASE REPORT

         N        FORM OF GUARANTY

         O        FORM OF REQUEST FOR TERM LOAN ADVANCE

<PAGE>   9

                                TABLE OF CONTENTS
                                   (Continued)

     SCHEDULES

         1        Pricing Matrix
         2.       Existing Letters of Credit
         3.       Foreign Account Debtors
         3.11     Densitron Letter of Credit
         7.4      Exceptions to Litigation Covenant
         7.5      Additional Permitted Encumbrances
         7.10     Subsidiaries
         7.11     Exceptions to Compliance with Laws Covenant
         7.16     Existing Indebtedness
         7.18     Capitalization
         7.19     Year 2000 Exceptions

<PAGE>   10

                                CREDIT AGREEMENT

          THIS CREDIT AGREEMENT ("Agreement") is made as of the 29th day of
July, 1999, by and among the Banks signatory hereto (individually, a "Bank", and
collectively the "Banks"), Comerica Bank, as agent for the Banks (in such
capacity, "Agent"), and MCE COMPANIES, INC., a Michigan corporation ("Company").

                                    RECITALS:

          A. Company and Comerica Bank entered into a Credit Agreement dated
December 31, 1997, as amended (the "Prior Credit Agreement").

          B. Pursuant to an Assignment Agreement[s] dated as of the date hereof
Comerica Bank assigned a portion of its interest in the credit facilities
extended pursuant to the Prior Credit Agreement to the other Banks.

          C. Company, Agent and the Banks desire to amend and restate the Prior
Credit Agreement as set forth below.

          NOW, THEREFORE, COMPANY, AGENT AND BANKS AGREE that the Prior Credit
Agreement is amended and restated in its entirety as follows:

          1. DEFINITIONS

          For the purposes of this Agreement the following terms will have the
following meanings:

          "Account(s)" shall mean any account or account receivable as defined
under the UCC, including without limitation, with respect to any Person, any
right of such Person to payment for goods sold or leased or for services
rendered.

          "Account Debtor" shall mean the party who is obligated on or under any
Account.

          "Account Party(ies)" shall mean, with respect to any Letter of Credit,
the account party or parties (which shall be Company, individually, and/or a
Subsidiary (jointly and severally with Company)) named in an application to the
Agent for the issuance of such Letter of Credit.

          "Advance(s)" shall mean, as the context may indicate, a borrowing
requested by Company, and made by the Banks under Section 2.1 hereof or
requested by Company and made by the Swing Line Bank under Section 4.1 hereof,
including without limitation any readvance, refunding or conversion of such
borrowing pursuant to Section 2.3 or 5.6 hereof, any advance in

<PAGE>   11

respect of a Letter of Credit under Section 3.6 hereof (including without
limitation the unreimbursed amount of any draws under any Letters of Credit),
and shall include, as applicable, a Revolving Credit Advance, a Swing Line
Advance, Eurodollar-based Advance, a Quoted Rate Advance and a Prime-based
Advance.

          "Affiliate" shall mean, with respect to any Person, any other Person
directly or indirectly controlling (including but not limited to all directors
and executive officers of such Person), controlled by, or under direct or
indirect common control with such Person. A Person shall be deemed to control a
corporation for the purposes of this definition if such Person possesses,
directly or indirectly, the power (i) to vote 10% or more of the securities
having ordinary voting power for the election of directors of such corporation
or (ii) to direct or cause the direction of the management and policies of such
corporation, whether through the ownership of voting securities, by contract or
otherwise.

          "Agent" shall mean Comerica Bank, in its capacity as agent hereunder,
or any successor agent appointed in accordance with Section 13.4 hereof.

          "Agent's Fees" shall mean those agency, letter of credit issuance and
other fees and expenses required to be paid by Company to Agent under Sections
3.5 and 13.7 hereof.

          "Alternate Base Rate" shall mean, for any day, an interest rate per
annum equal to the Federal Funds Effective Rate in effect on such day, plus one
percent (1%).

          "Applicable Commitment Fee Percentage" shall mean, as of any date of
determination thereof, the applicable percentage used to calculate the
commitment fees due and payable hereunder, determined (based upon the Total Debt
to EBITDA Ratio) by reference to the appropriate columns in the pricing matrix
attached to this Agreement as Schedule 1.

          "Applicable Interest Rate" shall mean (i) in respect of a Revolving
Credit Advance or any portion of the Term Loan, the Eurodollar-based Rate or the
Prime-based Rate applicable to such Advance or portion of the Term Loan (in the
case of a Eurodollar-based Advance or a portion of the Term Loan with respect to
which the interest rate is the Eurodollar-based Rate, for the relevant Interest
Period), and (ii) in respect of a Swing Line Advance, the Prime-based Rate or
Quoted Rate applicable to such Advance for the relevant Interest Period, in any
case as selected by Company from time to time subject to the terms and
conditions of this Agreement.

          "Applicable L/C Fee Percentage" shall mean, as of any date of
determination thereof, the applicable percentage used to calculate the Letter of
Credit Fees due and payable hereunder, determined (based upon the Total Debt to
EBITDA Ratio) by reference to the appropriate columns in the pricing matrix
attached to this Agreement as Schedule 1.

          "Asset Sale" shall mean the sale, transfer or other disposition by
Company or any Subsidiary of any asset to any Person, other than sales,
transfers or other dispositions of

<PAGE>   12

inventory in the ordinary course of business and sales of assets that have been
damaged, become obsolete or are no longer useable (to the extent not exceeding
$50,000 in the aggregate during any single fiscal year of Company).

          "Borrowing Base" shall mean, as of any date of determination, an
amount equal to the sum of (x) eighty-five percent (85%) of Eligible Accounts,
(y) seventy-five percent (75%) of Eligible Foreign Accounts, and (z) forty
percent (40%) of Eligible Inventory; provided, however, the maximum amount
available to be advanced under subclause (z) shall not exceed Six Million
Dollars ($6,000,000).

          "Borrowing Base Certificate" shall mean a borrowing base certificate,
substantially in the form of Exhibit M, with appropriate insertions and executed
by a Responsible Officer.

          "Borrowing Base Obligors" shall mean Company and each Subsidiary of
Company which becomes a Guarantor pursuant to and in accordance with the
provisions of this Agreement.

          "Business Day" shall mean any day on which commercial banks are open
for domestic and international business in Detroit, London and New York.

          "Capital Expenditure" shall mean, without duplication, any payment
made directly or indirectly for the purpose of acquiring or constructing fixed
assets, real property or equipment which in accordance with GAAP would be added
as a debit to the fixed asset account of the Person making such expenditure,
including, without limitation, amounts paid or payable under any conditional
sale or other title retention agreement or under any lease or other periodic
payment arrangement which is of such a nature that payment obligations of the
lessee or obligor thereunder would be required by generally accepted accounting
principles to be capitalized and shown as liabilities on the balance sheet of
such lessee or obligor.

          "Capital Lease" of any Person shall mean any lease of any property
(whether real, personal or mixed) by that Person as lessee which, in conformity
with GAAP, is, or is required to be accounted for as a capital lease on the
balance sheet of that Person, together with any renewals of such leases (or
entry into new leases) on substantially similar terms.

          "Collateral" shall mean all property or rights in which a security
interest, mortgage, lien or other encumbrance for the benefit of the Banks is or
has been granted or arises or has arisen, under or in connection with this
Agreement, the other Loan Documents, or otherwise.

          "Collateral Documents" shall mean the Security Agreements, the
Guaranty, the Mortgages, the Pledge Agreements and all of the other
acknowledgments, certificates, stock powers, financing statements, instruments
and other security documents executed by Company or any Subsidiary in favor of
the Agent for the benefit of the Banks and delivered to the Agent, as security
for the Indebtedness, in each case as of the Effective Date or, from time to
time, subsequent thereto, in connection with such Security Agreements, the
Guaranty, the Mortgages,

<PAGE>   13

the Pledge Agreements, this Agreement, the other Loan Documents, in each case,
as such collateral documents may be amended or otherwise modified from time to
time.

          "Company" shall mean MCE Companies, Inc., a Delaware corporation.

          "Consolidated" or "Consolidating" shall mean, when used with reference
to any financial term in this Agreement, the aggregate for two or more Persons
of the amounts signified by such term for all such Persons determined on a
consolidated basis in accordance with GAAP. Unless otherwise specified herein,
references to Consolidated financial statements or data of Company includes
consolidation with its Subsidiaries in accordance with GAAP.

          "Consolidated EBITDA" shall mean for any period of determination,
Consolidated Net Income for such period, less the aggregate amounts included in
determining Consolidated Net Income for extraordinary gains during such period,
plus the aggregate amounts deducted in determining Consolidated Net Income in
respect of (a) income taxes for such period, (b) interest expense for such
period, (c) depreciation and amortization expense and other non-cash charges for
such period, and (d) extraordinary losses for such period, in each case
determined on a Consolidated basis in accordance with GAAP plus the EBITDA
Adjustment.

          "Consolidated Net Income" shall mean, for any period of determination,
the net income (but not loss) of Company and its consolidated Subsidiaries for
such period determined in accordance with GAAP including any extraordinary gains
during such period; provided, however, for purposes of determining Consolidated
Net Income for any period, if under GAAP any Subsidiary is treated as a
consolidated Subsidiary for part of such period, such Subsidiary shall be deemed
to be a consolidated Subsidiary for such entire period.

          "Consolidated Adjusted Net Worth" shall mean as of any date of
determination, stockholders' equity in Company as of such date, plus, to the
extent not included in stockholders' equity, preferred stock and convertible and
redeemable warrants issued and outstanding as of such date, plus the outstanding
principal amount of the Subordinated Debt as of such date, all as determined in
accordance with GAAP.

          "Contractual Obligation" shall mean as to any Person, any provision of
any security issued by such Person or of any agreement, instrument or other
undertaking to which such Person is a party or by which it or any of its
property is bound.

          "Covenant Compliance Report" shall mean the report to be furnished by
Company to the Agent, in the form of attached Exhibit K and certified by the
chief financial officer of Company pursuant to Section 8.2 hereof (or in such
officer's absence, a responsible senior officer), in which report Company shall
set forth, among other things, detailed calculations and the resultant ratios or
financial tests with respect to the financial covenants contained in Sections
8.16 through 8.19 of this Agreement.
<PAGE>   14

          "Debt" shall mean, as of any applicable date of determination, all
items of indebtedness, obligation or liability of a Person, whether matured or
unmatured, liquidated or unliquidated, direct or indirect, absolute or
contingent, joint or several, that should be classified as liabilities in
accordance with GAAP, including without limitation, any items so classified on a
balance sheet and any reimbursement obligations in respect of letters of credit,
obligations in respect of bankers acceptances, provided, however that for
purposes of calculating the aggregate Debt of such Person and its Subsidiaries
(if any), the direct and indirect and absolute and contingent obligations of
such Person (whether direct or contingent) shall be determined without
duplication.

          "Default" shall mean any event which with the giving of notice or the
passage of time, or both, would constitute an Event of Default under this
Agreement.

          "Densitron Letter of Credit" shall mean letter of credit no.
in the original stated amount of 200,000 Pounds Sterling issued in favor of
Densitron International PLC for the account of Company.

          "Dollars" and the sign "$" shall mean lawful money of the United
States of America.

          "Domestic Subsidiary" shall mean those Subsidiaries of Company
incorporated under the laws of the United States or any state thereof and such
other Subsidiaries of Company which are treated as disregarded entities for U.S.
tax purposes. The term "Domestic Subsidiary" shall not include Densitron
Microwave Limited.

          "EBITDA Adjustment" shall mean (i) if the date of determination is
September 30, 1999, $1,000,000; (ii) if the date of determination is December
31, 1999, $700,000; (iii) if the date of determination is March 31, 2000,
$400,000; (iv) if the date of determination is June 30, 2000, $100,000; and (v)
if the date of determination is after June 30, 2000, $0.

          "Effective Date" shall mean the date on which all the conditions
precedent set forth in Sections 6.1 through 6.17 have been satisfied or waived
by the Agent or the Banks, as applicable.

          "Eligible Account" shall mean an Account of a Borrowing Base Obligor
which has been included in a Borrowing Base Certificate to determine the
Borrowing Base, and as to which Account the following is true and accurate as of
the time it was utilized to determine the Borrowing Base and as of the time
Company has requested an Advance based in part thereon:

          (a)  it is not owing more than ninety (90) days after the date of the
               invoice evidencing such Account;

          (b)  it is not owing by an Account Debtor who has failed to pay twenty
               five percent (25%) or more of the aggregate amount of its
               Accounts owing to the applicable Borrowing Base Obligor within
               ninety (90) days after the date of the respective

<PAGE>   15

               invoices or other writings evidencing such Accounts;

          (c)  it arises from the sale or lease of goods and such goods have
               been shipped or delivered to the Account Debtor under such
               Account; or it arises from services rendered and such services
               have been performed;

          (d)  it is evidenced by an invoice, dated not later than the date of
               shipment or performance, rendered to such Account Debtor or some
               other evidence of billing acceptable to Agent and is not
               evidenced by any instrument or chattel paper;

          (e)  it is a valid, legally enforceable obligation of the Account
               Debtor thereunder, and is not, to the knowledge of any Borrowing
               Base Obligor, subject to any offset, counterclaim or other
               defense on the part of such Account Debtor with respect to the
               entire Account or to any claim on the part of such Account Debtor
               denying liability thereunder in whole;

          (f)  it is not subject to any sale of accounts, any rights of offset,
               assignment, lien or security interest whatsoever other than to
               Agent for the benefit of the Banks;

          (g)  it is not owing by a subsidiary or Affiliate of any Borrowing
               Base Obligor nor by an Account Debtor which (i) does not maintain
               its chief executive office in the United States of America, (ii)
               is not organized under the laws of the United States of America,
               or any state thereof, unless such Account Debtor is one of the
               entities listed in attached Schedule 3 or is a Canadian
               subsidiary of Lucent, Motorola or Northern Telecom, (iii) is not
               an Account owing by the United States or any state or political
               subdivision thereof, or by any department, agency, public body
               corporate or other instrumentality of any of the foregoing,
               unless all necessary steps are taken to comply with the Federal
               Assignment of Claims Act of 1940, as amended, or with any
               comparable state law, if applicable, and all other necessary
               steps are taken to perfect Agent's security interest in such
               Account, provided, however, the requirements of this subclause
               (g) shall only be applicable if the Account is in excess of
               $500,000 or the aggregate amount of all government accounts is
               $1,000,000 or more, or (iv) is the government of any foreign
               country or sovereign state, or of any state, province,
               municipality or other instrumentality thereof; unless with
               respect to any of the above, the payment of the Account is
               secured by a letter of credit in form and substance and issued by
               a financial institution acceptable to Agent;

          (h)  it is not an Account billed in advance, payable on delivery, for
               consigned goods, for guaranteed sales, for unbilled sales, for
               progress billings, payable at a future date in accordance with
               its terms, subject to a retainage or holdback by the Account
               Debtor or insured by a surety company; and

          (i)  it is not owing by any Account Debtor whose obligations Agent,
               acting in its sole,

<PAGE>   16

               but reasonable, discretion, shall have notified Company are not
               deemed to constitute Eligible Accounts.

An Account which is at any time an Eligible Account, but which subsequently
fails to meet any of the foregoing requirements, shall forthwith cease to be an
Eligible Account. An Account which qualifies as an Eligible Account but which is
subject to any offset, counterclaim or defense on the part of the Account Debtor
in part, but not in whole, or to any claim on the part of the Account Debtor
denying liability thereunder in part, but not in whole, shall be an Eligible
Account only to the extent not subject to such offset, counterclaim, defense or
denial of liability and in such case only if the amount of such offset,
counterclaim, defense or denial of liability can be determined to Agent's sole
but reasonable satisfaction.

          "Eligible Foreign Account" shall mean an Account of a Borrowing Base
Obligor (other than an Eligible Account) which has been included in a Borrowing
Base Certificate to determine the Borrowing Base, and as to which Account the
following is true and accurate as of the time it was utilized to determine the
Borrowing Base and as of the time Company has requested an Advance based in part
thereon:

               (a) it is an Account with respect to which the Account Debtor
          does not satisfy the requirements of subclause (i) or (ii) of clause
          (g) of the definition of Eligible Account; and

               (b) the Account satisfies the requirements set forth in clauses
          (a) through (f), (h) and (i) of the definition of Eligible Account.

          "Eligible Inventory" shall mean Inventory of a Borrowing Base Obligor
which has been included in a Borrowing Base Certificate to determine the
Borrowing Base and as to which Inventory the following is true and accurate as
of the time it was utilized to determine the Borrowing Base and as of the time
the Company has requested an Advance based in part thereon:

               (a) such item of Inventory is of merchantable quality and is
          usable or salable by a Borrowing Base Obligor in the ordinary course
          of its business;

               (b) the applicable Borrowing Base Obligor has granted to the
          Banks a perfected security interest in such item of Inventory prior in
          right to all other persons or entities and such item of Inventory has
          not been sold, transferred or otherwise assigned by the applicable
          Borrowing Base Obligor, to any person other than the Banks;

               (c) such item of Inventory is located within the continental
          United States of America at such location or locations as Company
          shall have represented in the Loan Documents, relating to Inventory;

               (d) the value of each item of Inventory utilized to determine the
          Borrowing Base was determined in accordance with GAAP utilizing "first
          in, first out";
<PAGE>   17

               (e) such Inventory is not held on a consignment;

               (f) such Inventory was not produced in violation of the Fair
          Labor Standards Act and is not subject to the so-called "hot goods"
          provisions contained in Title 29 U.S.C. 215(a)(i);

               (g) such item of Inventory is not being held for return to the
          supplier thereof.

Any Inventory which is at any time Eligible Inventory, but which subsequently
fails to meet any of the foregoing requirements, shall forthwith cease to be
Eligible Inventory.

          "Equity Interests" means, with respect to any Person, any and all
shares, share capital, interests, participations, warrants, options or other
equivalents (however designated) of capital stock of a corporation and any and
all equivalent ownership interests in a Person (other than a corporation).

          "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as amended, or any successor act or code and the regulations in effect
from time to time thereunder.

          "Eurodollar-based Advance" shall mean any Advance which bears interest
at the Eurodollar-based Rate.

          "Eurodollar-based Rate" shall mean a per annum interest rate which is
the equal to the sum of the Margin plus the quotient of:

          (a)  the per annum interest rate at which Bank's Eurodollar Lending
               Office offers deposits to prime banks in the eurodollar market in
               an amount comparable to the relevant Eurodollar-based Advance or
               portion of the Term Loan with respect to which the
               Eurodollar-based Rate is the Applicable Interest Rate, as
               applicable, and for a period equal to the relevant Interest
               Period at approximately 11:00 A.M. Detroit time two (2) Business
               Days prior to the first day of such Interest Period; divided by

          (b)  a percentage equal to 100% minus the maximum rate on such date at
               which Bank is required to maintain reserves on "Euro-currency
               Liabilities" as defined in and pursuant to Regulation D of the
               Board of Governors of the Federal Reserve System or, if such
               regulation or definition is modified, and as long as Bank is
               required to maintain reserves against a category of liabilities
               which includes eurodollar deposits or includes a category of
               assets which includes eurodollar loans, the rate at which such
               reserves are required to be maintained on such category,
<PAGE>   18

all as conclusively determined by the Agent, such sum to be rounded upward, if
necessary, to the nearest whole multiple of 1/16th of 1%.

          "Eurodollar-Interest Period" shall mean the Interest Period applicable
to a Eurodollar-based Advance or portion of the Term Loan with respect to which
the Eurodollar-based Rate is the Applicable Interest Rate.

          "Eurodollar Lending Office" shall mean, (a) with respect to the Agent,
Agent's office located at Grand Cayman, British West Indies or such other branch
or branches of Agent, domestic or foreign, as it may hereafter designate as a
Eurodollar Lending Office by notice to Company and the Banks, and (b) as to each
of the Banks, its office, branch or affiliate located at its address set forth
on the signature pages hereof (or identified thereon as a Eurodollar Lending
Office), or at such other office, branch or affiliate of such Bank as it may
hereafter designate as its Eurodollar Lending Office by notice to Company and
Agent.

          "Event of Default" shall mean each of the Events of Default specified
in Section 10.1 hereof.

          "Federal Funds Effective Rate" shall mean, for any day, a fluctuating
interest rate per annum equal to the weighted average of the rates on overnight
Federal funds transactions with members of the Federal Reserve System arranged
by Federal funds brokers, as published for such day (or, if such day is not a
Business Day, for the next preceding Business Day) by the Federal Reserve Bank
of New York, or, if such rate is not so published for any day which is a
Business Day, the average of the quotations for such day on such transactions
received by Agent from three Federal funds brokers of recognized standing
selected by it, all as conclusively determined by the Agent, such sum to be
rounded upward, if necessary, to the nearest whole multiple of 1/16th of 1%.

          "Fees" shall mean the Revolving Credit Commitment Fee, the Letter of
Credit Fees, the Agent's Fees and the other fees and charges payable by Company
to the Banks or Agent hereunder.

          "Financial Statements" shall mean all those balance sheets, earnings
statements and other financial data (whether of the Company or otherwise) which
have been furnished to the Agent or the Banks for the purposes of, or in
connection with, this Agreement and the transactions contemplated hereby.

          "Fixed Charge Coverage Ratio" shall mean as of any date of
determination a ratio the numerator of which shall equal Consolidated Net Income
for the four preceding fiscal quarters ending on such date, plus to the extent
deducted in determining Consolidated Net Income, (a) extraordinary losses during
such period,(b) depreciation, amortization and other non-cash charges for such
period, and (c) the EBITDA Adjustment, less the aggregate Capital Expenditures
by Company and its consolidated Subsidiaries during such period, less dividends
and distributions paid or declared by Company during such period and less, to
the extent added

<PAGE>   19

in determining Consolidated Net Income, extraordinary gains during such period,
and the denominator of which shall equal Fixed Charge Principal Payments.

          "Fixed Charge Principal Payments" shall mean (i) if the date of
determination is September 30, 1999 or December 31, 1999, $3,000,000, (ii) if
the date of determination is March 31, 2000, June 30, 2000 or September 30,
2000, $3,500,000 and (iii) if the date of determination is after September 30,
2000, the sum of all principal payments which become due and payable by Company
and its consolidated Subsidiaries during the four quarter period ending on such
date on indebtedness for borrowed money.

          "Foreign Subsidiary" shall mean each direct and indirect Subsidiary of
Company which is not a Domestic Subsidiary.

          "GAAP" shall mean generally accepted accounting principles in the
United States of America, as in effect from time to time, consistently applied.

          "Guarantors" shall mean each Domestic Subsidiary of Company which is a
Material Subsidiary and each other Person who shall become a Domestic Subsidiary
of Company and is a Material Subsidiary after the date hereof and shall have
delivered to Agent on behalf of the Banks a guaranty of the Indebtedness in the
form of the Guaranty (or a joinder agreement) and shall have delivered to Agent
on behalf of Banks a security agreement in form satisfactory to Agent and the
Banks and such other documents as are reasonably determined by Agent and the
Banks to be necessary to grant to Agent and the Banks a security interest
(except as otherwise not required under this Agreement) in all of such Person's
assets, whether then owned or thereafter acquired, together with all
replacements thereof, substitutions therefor, accessions thereto and all
proceeds and products of all of the foregoing.

          "Guaranty" shall mean the Guaranty, in the form attached hereto as
Exhibit N, dated as of the date hereof by and any joinder agreement executed
after the date hereof by each Person which becomes a Domestic Subsidiary and a
Material Subsidiary after the date hereof guarantying all present and future
obligations of Company to Agent and the Banks including, without limitation, the
Indebtedness, as amended from time to time.

          "Hazardous Material" shall mean and include any hazardous, toxic or
dangerous waste, substance or material defined as such in (or for purposes of)
the Hazardous Material Laws.

          "Hazardous Material Law(s)" shall mean all laws, codes, ordinances,
rules, regulations, orders, decrees and directives issued by any federal, state,
provincial, local, foreign or other governmental or quasi-governmental authority
or body (or any agency, instrumentality or political subdivision thereof)
pertaining to Hazardous Material on or about any facilities owned, leased or
operated by Company or any of its Subsidiaries, or any portion thereof
including, without limitation, those relating to soil, surface, subsurface
ground water conditions and the condition of the ambient air; and any state and
local laws and regulations pertaining to Hazardous Material and/or asbestos; any
so-called "superfund" or "superlien" law; and any other
<PAGE>   20

federal, state, provincial, foreign or local statute, law, ordinance, code,
rule, regulation, order or decree regulating, relating to, or imposing liability
or standards of conduct concerning, any hazardous, toxic or dangerous waste,
substance or material, as now or at any time hereafter in effect.

          "Hedging Transaction" means each interest rate swap transaction, basis
swap transaction, forward rate transaction, commodity swap transaction, equity
transaction, equity index transaction, foreign exchange transaction, cap
transaction, floor transaction (including any option with respect to any of
these transactions and any combination of any of the foregoing) entered into by
the Borrowers from time to time; provided that such transaction is entered into
for risk management purposes and not for speculative purposes.

          "Hereof", "hereto", "hereunder" and similar terms shall refer to this
Agreement and not to any particular paragraph or provision of this Agreement.

          "Indebtedness" shall mean without duplication all indebtedness and
liabilities (including without limitation interest, fees and other charges)
arising under this Agreement or any of the Loan Documents, whether direct or
indirect, absolute or contingent, of Company to any of the Banks or to the
Agent, in any manner and at any time, whether evidenced by the Notes or arising
under any of the other Loan Documents, due or hereafter to become due, now owing
or that may be hereafter be incurred by Company to, or acquired by, any of the
Banks or by Agent, and any judgments that may hereafter be rendered on such
indebtedness or any part thereof, with interest according to the rates and terms
specified, or as provided by law, and any and all consolidation, amendments,
renewals, replacements, substitutions or extensions of any of the foregoing.

          "Inmet Cap Ex" shall mean Capital Expenditures during 1999 and 2000
incurred for the acquisition of land and the making of building improvements for
the addition to Inmet's plant located in Ann Arbor, Michigan and the
construction of a headquarters building for Company to the extent not exceeding
$2,500,000 in the aggregate.

          "Interest Period" shall mean (i) with respect to a Eurodollar-based
Advance or any portion of the Term Loan with respect to which the
Eurodollar-based Rate is the Applicable Interest Rate, one (1), two (2), three
(3) or six (6) months as selected by Company pursuant to Section 2.7 or 5.5
hereof; provided, however, that any Interest Period which commences on the last
Business Day of a calendar month (or on any day for which there is no
numerically corresponding day in the appropriate subsequent calendar month)
shall end on the last Business Day of the appropriate subsequent calendar month
and (ii) with respect to a Swing Line Advance, a period of one (1) to thirty
(30) days agreed to in advance by Company and the Swing Line Bank as selected by
Company pursuant to Section 4.6 hereof. Each Interest Period which would
otherwise end on a day which is not a Business Day shall end on the next
succeeding Business Day or, if such next succeeding Business Day falls in the
next succeeding calendar month, on the next preceding Business Day. No Interest
Period which would end after the Revolving Credit Maturity Date shall be
permitted with respect to any Advance, and no Interest

<PAGE>   21

Period which would end after the Term Loan Maturity Date shall be permitted with
respect to any portion of the Term Loan. No Interest Period with respect to a
portion of the Term Loan required to be paid on any principal installment date
shall end past such principal installment date.

          "Interest Rate Protection Agreement" means any Hedging Transaction
entered into between Company and any Bank or an Affiliate of a Bank; provided
that such transaction is entered into for risk management purpose and not for
speculative purposes.

          "Internal Revenue Code" shall mean the Internal Revenue Code of 1986,
as amended from time to time, and the regulations promulgated thereunder.

          "Inventory" shall have the meaning assigned to it in the UCC on the
date of this Agreement.

          "Issuing Office" shall mean Agent's office located at One Detroit
Center, 500 Woodward Avenue, Detroit, Michigan 48226 or such other office as
Agent shall designate as its Issuing Office.

          "Letter(s) of Credit" shall mean any standby or documentary letters of
credit issued by Agent at the request of or for the account of an Account Party
pursuant to Article 3 hereof and those Existing Letters of Credit issued by
Comerica Bank on behalf of Company or a Subsidiary, as identified on Schedule 2
("Existing Letters of Credit") hereto.

          "Letter of Credit Agreement" shall mean, in respect of each Letter of
Credit, the application and related documentation satisfactory to the Agent of
an Account Party or Account Parties requesting Agent to issue such Letter of
Credit, as amended from time to time.

          "Letter of Credit Fees" shall mean the fees payable to Agent for the
accounts of the Banks in connection with Letters of Credit pursuant to Section
3.4 hereof.

          "Letter of Credit Maximum Amount" shall mean as of any date of
determination the lesser of: (a) Five Million Dollars ($5,000,000); or (b) the
Revolving Credit Aggregate Commitment as of such date, minus the aggregate
principal amount of Advances outstanding as of such date under the Revolving
Credit Notes and the Swing Line Note.

          "Letter of Credit Obligation(s)" shall mean the obligation of an
Account Party under each Letter of Credit Agreement to reimburse the Agent for
each payment made by the Agent under the Letter of Credit issued pursuant to
such Letter of Credit Agreement, together with all other sums, fees, charges and
amounts which may be owing to the Agent under such Letter of Credit Agreement.

          "Letter of Credit Payment" shall mean any amount paid or required to
be paid by the
<PAGE>   22

Agent in its capacity hereunder as issuer of a Letter of Credit as a result of a
draft or other demand for payment under any Letter of Credit.

          "Lien" shall mean any pledge, assignment, hypothecation, mortgage,
security interest, trust receipt, conditional sale or title retaining contract,
sale and leaseback transaction, financing statement or comparable notice or
other filing or recording, Capital Lease, subordination or any claim or right,
or any other type of lien, charge, encumbrance, preferential or priority
arrangement or other claim or right, whether based on common law or statute.

          "Loan Documents" shall mean, collectively, this Agreement, the Notes,
the Letter of Credit Agreements, the Letters of Credit, the Security Agreements,
the Guaranty, the Pledge Agreements, the Mortgages, and any other documents,
certificates, instruments or agreements executed pursuant to or in connection
with any such document or this Agreement, as such documents may be amended from
time to time.

          "Majority Banks" shall mean at any time Banks holding not less than
sixty-six and two-thirds percent (66 2/3%) of the sum of the aggregate principal
amount of the Indebtedness then outstanding under the Revolving Credit Notes and
the Term Notes (or, if no Indebtedness is then outstanding, Banks holding not
less than sixty-six and two-thirds percent (66 2/3%) of the Percentages).

          "Margin" shall mean, as of any date of determination thereof, the
applicable interest rate margin determined (based upon the Senior Debt to EBITDA
Ratio) by reference to the appropriate columns in the pricing matrix attached to
this Agreement as Schedule 1.

          "Material Adverse Effect" shall mean a material adverse effect on (a)
the business or financial condition of the Company and its Subsidiaries taken as
a whole, (b) the ability of the Company to perform its obligations under this
Agreement, the Notes or any other Loan Document to which it is a party, or (c)
the validity or enforceability of this Agreement, any of the Notes or any of the
other Loan Documents or the rights or remedies of the Agent or the Banks
hereunder or thereunder.

          "Material Subsidiary" shall mean each Domestic Subsidiary of Company
which has assets having a fair market value of $100,000 or more or which has
annual gross income of $250,000 or more.

          "Mortgages" shall mean the Mortgages dated as of the date hereof, and
all Mortgages executed and delivered after the date hereof by Company, any
Domestic Subsidiary or any Person who becomes a Domestic Subsidiary after the
date hereof, executed and delivered to Agent on behalf of the Banks as of the
date hereof by Company and other Domestic Subsidiaries granting Agent and the
Banks first priority liens on all of the real property owned by Company and each
of the Domestic Subsidiaries subject only to such encumbrances as are acceptable
to Agent and the Banks.
<PAGE>   23

          "Net Cash Proceeds" shall mean, with respect to any Asset Sale, the
aggregate cash payments received by Company and/or any Subsidiary, as the case
may be, from such Asset Sale, net of the reasonable direct expenses of sale such
as commissions and pro rated property taxes and net of any taxes actually
payable by Company in respect of such sales, taking into account Company's
losses, if any, which are available under applicable law to reduce such gains.

          "Notes" shall mean the Revolving Credit Notes, the Term Notes and the
Swing Line Note and "Note" shall mean any of them.

          "Notice of Term Rate" shall mean a Notice of Term Rate issued by
Company under this Agreement in the form annexed to this Agreement as Exhibit G.

          "Pension Plan(s)" shall mean all employee pension benefit plans of
Company or its Subsidiaries, as defined in Section 3(2) of ERISA.

          "Percentage" shall mean, with respect to any Bank, its percentage
share, as set forth on Exhibit I, hereto, of the Revolving Credit and the Term
Loan and its risk participation in Letters of Credit as such Exhibit may be
revised from time to time.

          "Permitted Acquisition" shall mean the Transaction and any acquisition
by the Company or any of its Subsidiaries of assets, businesses or business
interests or shares of stock or other ownership interests of or in any Person
("target") which operates in the United States in substantially the same line of
business as Company or the Subsidiary which is a party to the acquisition and
which is conducted in accordance with the following requirements:

               (a) not more than five (5) days after the signing of any letter
          of intent for such proposed acquisition or not later than sixty (60)
          days before the consummation of the acquisition, whichever first
          occurs, the Company shall have provided a copy of the applicable
          letter of intent to the Agent and promptly upon signing the definitive
          acquisition documents, Company shall have provided copies thereof to
          the Agent;

               (b) on the date of any such acquisition, all necessary or
          appropriate governmental, quasi-governmental, agency, regulatory or
          similar approvals of applicable jurisdictions (or the respective
          agencies, instrumentalities or political subdivisions, as applicable,
          of such jurisdictions) and all necessary or appropriate
          non-governmental and other third-party approvals which, in each case,
          are material to such acquisition have been obtained and are in effect,
          and the Borrowers and their Subsidiaries are in compliance in all
          material respects therewith, and all necessary or appropriate
          declarations, registrations or other filings with any court,
          governmental or regulatory authority, securities exchange or any other
          person have been made;

               (c) the total cash consideration of each such acquisition
          conducted while this

<PAGE>   24

          Agreement remains in effect as Permitted Acquisitions (but excluding
          any acquisition conducted with the specific written approval of the
          Majority Banks, and not as a Permitted Acquisition hereunder),
          computed on the basis of total acquisition consideration paid or
          incurred, or to be paid or incurred, by the Company or its
          Subsidiaries with respect thereto, including all indebtedness which is
          assumed or to which such assets, businesses or business or ownership
          interests or shares, or any Person so acquired, is subject, shall not
          exceed Five Million Dollars ($5,000,000);

               (d) within thirty (30) days after any such acquisition has been
          completed Company shall deliver to the Agent executed copies of all
          material documents pertaining to such acquisition, and the Company,
          its Subsidiaries and any of the corporate entities involved in such
          acquisition shall execute or cause to be executed, and provide or
          cause to be provided to Agent, for the Banks, such documents and
          instruments (including without limitation, the joinder agreement,
          Security Agreements and Mortgages as required by Section 8.21 hereof
          and Mortgages of all real property acquired by Company or any existing
          Domestic Subsidiary as a result of such acquisition, and opinions of
          counsel, amendments, acknowledgments, consents and evidence of
          approvals or filings) as reasonably requested by Agent, if any;

               (e) within sixty (60) days prior to the effective date of the
          acquisition, Company shall deliver to Agent, (i) a pro forma financial
          statement for the target, as of the effective date of the acquisition,
          (ii) a pro forma financial statement of Company and its consolidated
          Subsidiaries for the 12 month period ending on the effective date of
          the acquisition prepared as if the acquisition became effective on the
          first day of such period; and (iii) financial projections for the 3
          year period commencing on the effective date of the acquisition,
          including financial covenant compliance projections; and

               (f) both immediately before and after such acquisition, no
          Default or Event of Default (whether or not related to such
          acquisition), has occurred and is continuing and on the date of
          consummation of such acquisition, Borrowers shall have provided to the
          Agent a certificate of a Responsible Officer as to such effect.

          "Permitted Encumbrances" shall mean with respect to any Person:

                   (a) the Liens granted under or established by this Agreement
or the Loan Documents;

                   (b) Liens for taxes not yet delinquent or which are being
contested in good faith by appropriate proceedings diligently pursued, provided
that provision for the payment of all such taxes has been made on the books of
such Person as may be required by GAAP;

                   (c) mechanics', materialmen's, banker's, carriers',
warehousemen's

<PAGE>   25

and similar Liens arising in the ordinary course of business and securing
obligations of such Person that are not overdue for a period of more than 60
days or are being contested in good faith by appropriate proceedings diligently
pursued, provided that in the case of any such contest (i) any proceedings
commenced for the enforcement of such Liens shall have been duly suspended; and
(ii) such provision for the payment of such Liens has been made on the books of
such Person as may be required by GAAP;

                   (d) Liens arising in connection with worker's compensation,
unemployment insurance, old age pensions and social security benefits and
similar statutory obligations which are not overdue or are being contested in
good faith by appropriate proceedings diligently pursued, provided that in the
case of any such contest (i) any proceedings commenced for the enforcement of
such Liens shall have been duly suspended; and (ii) such provision for the
payment of such Liens has been made on the books of such Person as may be
required by GAAP;

                   (e)(i) Liens incurred in the ordinary course of business to
secure the performance of statutory obligations arising in connection with
progress payments or advance payments due under contracts with the United States
government or any agency thereof entered into in the ordinary course of business
and (ii) Liens incurred or deposits made in the ordinary course of business to
secure the performance of statutory obligations, bids, leases, fee and expense
arrangements with trustees and fiscal agents and other similar obligations
(exclusive of obligations incurred in connection with the borrowing of money,
any lease-purchase arrangements or the payment of the deferred purchase price of
property), provided that full provision for the payment of all such obligations
set forth in clauses (i) and (ii) has been made on the books of such Person as
may be required by GAAP;

                   (f) minor survey exceptions or minor encumbrances, easements
or reservations, or rights of others for rights-of-way, utilities and other
similar purposes, or zoning or other restrictions as to the use of real
properties, which do not materially interfere with the business of such Person,
including, without limitation the matters disclosed in the surveys and title
policies relating to the real property mortgaged to the Agent for the benefit of
the Banks under the Mortgage accepted by Banks as of the date of this Agreement;
and

                   (g) interests of lessors in leased equipment, including
filings for notification purposes.

          "Person" shall mean an individual, corporation, limited liability
company, partnership, trust, incorporated or unincorporated organization, joint
venture, joint stock company, or a government or any agency or political
subdivision thereof or other entity of any kind.

          "Pledge Agreements" shall mean the security agreements dated as of the
date hereof, and all security agreements executed and delivered after the date
hereof, pursuant to which Company and any Subsidiary grants to Agent and the
Banks a first priority security interest in all of the

<PAGE>   26

issued and outstanding stock of its Domestic Subsidiaries and 65% of the issued
and outstanding stock of its Foreign Subsidiaries, as may be amended from time
to time.

          "Prime Rate" shall mean the per annum rate of interest announced by
the Agent, at its main office from time to time as its "prime rate" (it being
acknowledged that such announced rate may not necessarily be the lowest rate
charged by the Agent, to any of its customers), which Prime Rate shall change
simultaneously with any change in such announced rate.

          "Prime-based Advance" shall mean an Advance which bears interest at
the Prime-based Rate.

          "Prime-based Rate" shall mean, for any day, that rate of interest
which is equal to the sum of the Margin plus the greater of (i) the Prime Rate,
or (ii) the Alternate Base Rate.

          "Quoted Rate" shall mean a per annum rate of interest quoted by the
Swing Line Bank and accepted by Company with respect to a Swing Line Advance.

          "Quoted Rate Advance" shall mean a Swing Line Advance which bears
interest at the Quoted Rate.

          "Request for Revolving Credit Advance" shall mean a Request for
Revolving Credit Advance issued by Company under Section 2.7 of this Agreement
in the form annexed hereto as Exhibit A.

          "Request for Swing Line Advance" shall mean a Request for Swing Line
Advance issued by Company under Section 4.6 of this Agreement in the form
attached hereto as Exhibit D.

          "Request for Term Loan Advance" shall mean a Request for Term Loan
Advance issued by Company under Section 5.3 of this Agreement in the form
annexed hereto as Exhibit O.

          "Requirement of Law" shall mean as to any Person, the certificate of
incorporation and bylaws, the partnership agreement or other organizational or
governing documents of such Person and any law, treaty, rule or regulation or
determination of an arbitration or a court or other governmental authority, in
each case applicable to or binding upon such Person or any of its property or to
which such Person or any of its property is subject.

          "Responsible Officer" shall mean the chief executive officer or the
president of Company, or any other officer having substantially the same
authority and responsibility; or with respect to compliance with financial
covenants, the chief financial officer or the treasurer of Company, or any other
officer having substantially the same authority and responsibility.

          "Revolving Credit" shall mean the revolving credit loan to be advanced
to the Company by the Banks pursuant to Article 2 hereof, in an aggregate amount
(subject to the terms hereof), not to exceed, at any one time outstanding, the
Revolving Credit Aggregate Commitment.
<PAGE>   27

          "Revolving Credit Advance" shall mean a borrowing requested by the
Company and made by the Banks under Section 2.1 of this Agreement, including
without limitation any readvance, refunding or conversion of such borrowing
pursuant to Section 2.3 hereof and any advance in respect of a Letter of Credit
under Section 3.6 hereof, and shall include, as applicable, a Eurodollar-based
Advance and/or a Prime-based Advance.

          "Revolving Credit Aggregate Commitment" shall mean Twelve Million
Dollars ($12,000,000) subject to reduction or termination under Section 2.13 or
10.2 hereof.

          "Revolving Credit Commitment Fee" shall mean the fees payable to Agent
for distribution to the Banks pursuant to Section 2.11 hereof.

          "Revolving Credit Maturity Date" shall mean the earlier to occur of
(i) August 1, 2004, as the same may be extended from time to time pursuant to
the provisions of Section 2.14, and (ii) the date on which the Revolving Credit
Aggregate Commitment shall be terminated pursuant to Section 2.13 or Section
10.2 hereof.

          "Revolving Credit Notes" shall mean the revolving credit notes
described in Section 2.1 hereof, made by Company to each of the Banks in the
form annexed to this agreement as Exhibit B, as such notes may be amended or
supplemented from time to time, and any other notes issued in substitution,
replacement or renewal thereof from time to time.

          "Security Agreements" shall mean security agreements dated as of the
date hereof, and all security agreements executed and delivered after the date
hereof by any Person which becomes a Domestic Subsidiary after the date hereof,
pursuant to which Company and each Domestic Subsidiary grants to Agent and Banks
a first priority security interest in all accounts, chattel paper, documents,
equipment, fixtures, general intangibles, goods, instruments (excluding certain
of the share capital of Foreign Subsidiaries) and inventory, wherever located
and whether now owned or hereafter acquired, together with all replacements
thereof, substitutions therefor, accessions thereto and all proceeds and
products of all the foregoing, as may be amended from time to time.

          "Senior Debt" shall mean as of any date of determination all Total
Debt as of such date less all Subordinated Debt as of such date.

          "Senior Debt to EBITDA Ratio" shall mean, as of any date of
determination, a ratio, the numerator of which shall equal Senior Debt as of
such date and the denominator of which shall equal Consolidated EBITDA for the
four quarter period ending on such date.

          "Subordinated Debt" shall mean Debt of Company or a Subsidiary which
has been subordinated in right of payment and priority to the Indebtedness, all
on terms and conditions satisfactory to the Agent and the Banks.
<PAGE>   28

          "Subordinated Debt Documents" shall mean any documents evidencing
Subordinated Debt, in each case, as the same may be amended, modified or
supplemented from time to time in compliance with the terms of this Agreement.

          "Subsidiary(ies)" shall mean any other corporation, limited liability
company, association, joint stock company, or business trust of which more than
fifty percent (50%) of the outstanding voting stock, share capital or other
equity interests is owned either directly or indirectly by any Person or one or
more of its Subsidiaries, or the management of which is otherwise controlled,
directly, or indirectly through one or more intermediaries, or both, by any
Person and/or its Subsidiaries. Unless otherwise specified to the contrary
herein, Subsidiary(ies) shall refer to the Company's Subsidiary(ies).

          "Swing Line" shall mean the swing line loan to be advanced to the
Company and made by the Swing Line Bank pursuant to Article 4 hereof, in an
aggregate amount (subject to the terms hereof), not to exceed Five Million
Dollars ($5,000,000), at any time outstanding.

          "Swing Line Advance" shall mean a borrowing made by Swing Line Bank to
the Company pursuant to Section 4.1 hereof.

          "Swing Line Bank" shall mean Comerica Bank, in its capacity as lender
under Article 4 of this Agreement, and its successors and assigns.

          "Swing Line Note" shall mean the swing line note described in Section
4.1 hereof, made by Company to Swing Line Bank in the form annexed hereto as
Exhibit E, as such Note may be amended or supplemented from time to time, and
any notes issued in substitution, replacement or renewal thereof from time to
time.

          "Term Loan" shall mean the term loans extended by the Banks to Company
in the aggregate principal amount of Twenty Five Million Dollars ($25,000,000)
pursuant to Section 5 of this Agreement.

          "Term Loan Maturity Date" shall mean August 1, 2004.

          "Term Notes" shall mean the term notes described in Section 5.1 of
this Agreement made by Company to each of the Banks in the form annexed to this
Agreement as Exhibit H, as such notes may be amended or supplemented from time
to time, and any other notes issued in substitution, replacement or renewal
thereof from time to time.

          "Total Debt" shall mean as of any date of determination, the sum,
without duplication, of (a) all indebtedness of Company and its consolidated
Subsidiaries for borrowed money or for the deferred purchase price of property
or services as of such date (other than trade liabilities incurred in the
ordinary course of business and payable in accordance with customary practices)
or which is evidenced by a note, bond, debenture or similar instrument, (b) all
obligations of

<PAGE>   29

Company and its consolidated Subsidiaries under Capital Leases as of such date,
(c) without duplication, all obligations of Company and its consolidated
Subsidiaries in respect of Letters of Credit, acceptances or similar obligations
issued or created for the account of Company or any of its consolidated
Subsidiaries as of such date, (d) all liabilities secured by any lien on any
property owned by Company and its consolidated Subsidiaries as of such date even
though Company or its Subsidiaries, as applicable, have not assumed or otherwise
become liable for the payment thereof, and (e) without duplication, all
guarantee obligations of Company and its consolidated Subsidiaries as of such
date. For purposes of determining Total Debt, Company's guaranty obligation to
Densitron International Limited shall be disregarded to the extent such
obligation is secured by the Densitron Letter of Credit.

          "Total Debt to EBITDA Ratio" shall mean, as of any date of
determination, a ratio, the numerator of which shall equal Total Debt as of such
date and the denominator of which shall equal Consolidated EBITDA for the four
quarter period ending on such date.

          "Transaction" shall mean the acquisition by Company of all of the
share capital of Densitron Microwave Limited.

          "Transaction Documents" shall mean the Sale and Purchase Agreement
dated as of June 29, 1999 among Company, Densitron International PLC and DML
Microwave Limited together with all other documents and instruments executed and
delivered in connection with the Transaction.

          "UCC" shall mean the Uniform Commercial Code, as in effect from time
to time in the State of Michigan.

          2. REVOLVING CREDIT.

          2.1 Revolving Credit Commitment. Subject to the terms and conditions
of this Agreement, each Bank severally and for itself alone agrees to make
Advances of the Revolving Credit to Company from time to time on any Business
Day during the period from the effective date hereof until (but excluding) the
Revolving Credit Maturity Date in an aggregate amount not to exceed at any one
time outstanding each such Bank's Percentage of the Revolving Credit Aggregate
Commitment. All of such Advances hereunder shall be evidenced by the Revolving
Credit Notes, under which advances, repayments and readvances may be made,
subject to the terms and conditions of this Agreement.

          2.2 Accrual of Interest and Maturity. The Revolving Credit Notes, and
all principal and interest outstanding thereunder, shall mature and become due
and payable in full on the Revolving Credit Maturity Date, and each Advance
evidenced by the Revolving Credit Notes from time to time outstanding hereunder
shall, from and after the date of such Advance, bear interest at its Applicable
Interest Rate. The amount and date of each Revolving Credit Advance, its
Applicable Interest Rate, its Interest Period, and the amount and date of any
repayment shall
<PAGE>   30
be noted on Agent's records, which records will be conclusive
evidence thereof, absent demonstrable error in computation; provided, however,
that any failure by the Agent to record any such information shall not relieve
Company of its obligation to repay the outstanding principal amount of such
Advance, all interest accrued thereon and any amount payable with respect
thereto in accordance with the terms of this Agreement and the Loan Documents.

         2.3 Prime-based Interest Payments. Interest on the unpaid balance of
all Prime-based Advances from time to time outstanding shall accrue from the
date of such Advances to the Revolving Credit Maturity Date (and until paid), at
a per annum interest rate equal to the Prime-based Rate, and shall be payable in
immediately available funds quarterly commencing on the first day of the
calendar quarter next succeeding the calendar quarter during which the initial
Advance is made and on the first day of each calendar quarter thereafter.
Interest accruing at the Prime-based Rate shall be computed on the basis of a
360 day year and assessed for the actual number of days elapsed, and in such
computation effect shall be given to any change in the interest rate resulting
from a change in the Prime-based Rate on the date of such change in the
Prime-based Rate.

         2.4 Eurodollar-based Interest Payments. Interest on each
Eurodollar-based Advance having a related Interest Period of three (3) months or
less shall accrue at its Eurodollar-based Rate and shall be payable in
immediately available funds on the last day of the Interest Period applicable
thereto. Interest shall be payable in immediately available funds on each
Eurodollar-based Advance outstanding from time to time having an Interest Period
of more than three (3) months, at intervals of three (3) months after the first
day of the applicable Interest Period, and shall also be payable on the last day
of the Interest Period applicable thereto. Interest accruing at the
Eurodollar-based Rate shall be computed on the basis of a 360 day year and
assessed for the actual number of days elapsed from the first day of the
Interest Period applicable thereto to, but not including, the last day thereof.

         2.5 Interest Payments on Conversions. Notwithstanding anything to the
contrary in Sections 2.2, 2.3 and 2.4, all accrued and unpaid interest on any
Revolving Credit Advance refunded or converted pursuant to Section 2.7 hereof
shall be due and payable in full on the date such Advance is refunded or
converted.

         2.6 Interest on Default. Notwithstanding anything to the contrary set
forth in Sections 2.3 and 2.4, in the event and so long as any Event of Default
shall exist, in the case of any Event of Default under Sections 10.1(a) or
10.1(k), immediately upon the occurrence thereof, and in the case of all other
Events of Default, upon notice from the Majority Banks, interest shall be
payable daily on all Eurodollar-based Advances of the Revolving Credit from time
to time outstanding (and all other monetary obligations of Company hereunder and
under the other Loan Documents) at a per annum rate equal to the Applicable
Interest Rate (and, with respect to Eurodollar-based Advances calculated on the
basis of the maximum Margin) plus three percent (3%) for the remainder of the
then existing Interest Period, if any, and at all other such times and for all
Prime-based Advances from time to time outstanding, at a per annum rate equal to
the

<PAGE>   31

Prime-based Rate plus three percent (3%).

         2.7 Requests for Advances and Requests for Refundings and Conversions
of Revolving Credit Advances. Company may request a Revolving Credit Advance,
refund any Revolving Credit Advance in the same type of Revolving Credit Advance
or convert any Revolving Credit Advance to any other type of Revolving Credit
Advance only after delivery to Agent of a Request for Revolving Credit Advance
executed by an authorized officer of Company subject to the following and to the
remaining provisions hereof:

                  (a) each such Request for Revolving Credit Advance shall set
         forth the information required on the Request for Revolving Credit
         Advance form annexed hereto as Exhibit A, including without limitation:

                  (i)      the proposed date of Revolving Credit Advance, which
                           must be a Business Day;

                  (ii)     whether the Revolving Credit Advance is a refunding
                           or conversion of an outstanding Revolving Credit
                           Advance; and

                  (iii)    whether such Revolving Credit Advance is to be a
                           Prime-based Advance or a Eurodollar-based Advance,
                           and, except in the case of a Prime-based Advance, the
                           first Interest Period applicable thereto;

                  (b) each such Request for Revolving Credit Advance shall be
         delivered to Agent by 11:00 a.m. (Detroit time) three (3) Business Days
         prior to the proposed date of Revolving Credit Advance, except in the
         case of a Prime-based Advance, for which the Request for Revolving
         Credit Advance must be delivered by 12:00 noon (Detroit time) on such
         proposed date;

                  (c) the principal amount of such requested Revolving Credit
         Advance, plus the principal amount of all other Advances then
         outstanding hereunder, plus the principal amount of all Advances
         requested hereunder but not yet funded, plus the aggregate undrawn
         portion of any Letters of Credit which shall be outstanding as of the
         date of the requested Revolving Credit Advance and the aggregate face
         amount of Letters of Credit requested but not yet issued, less the
         principal amount of any outstanding Advance to be refunded by the
         requested Revolving Credit Advance, shall not exceed the lesser of the
         then applicable (i) Revolving Credit Aggregate Commitment and (ii)
         Borrowing Base;

                  (d) the principal amount of such Revolving Credit Advance,
         plus the amount of any other outstanding Indebtedness under this
         Agreement to be then combined therewith having the same Applicable
         Interest Rate and Interest Period, if any, shall be (i) in the case of
         a Prime-based Advance, at least $1,000,000 and (ii) in the case of a
         Eurodollar-based Advance, at least $2,000,000, and at any one time
         there shall not be in effect more than five (5) Interest Periods;

<PAGE>   32

                  (e) each Request for Revolving Credit Advance, once delivered
         to Agent, shall not be revocable by Company, and shall constitute and
         include a certification by the Company as of the date thereof that:

                  (i)      both before and after the Revolving Credit Advance,
                           the obligations of the Company set forth in this
                           Agreement and the parties to the Loan Documents, as
                           applicable, are valid, binding and enforceable
                           obligations of Company and such parties,
                           respectively;

                  (ii)     to the best knowledge of Company all conditions to
                           Advances of the Revolving Credit have been satisfied;

                  (iii)    both before and after the Advance, there is no
                           Default or Event of Default in existence; and

                  (iv)     both before and after the Advance, the
                           representations and warranties contained in this
                           Agreement and the Loan Documents are true and correct
                           in all material respects.

         Agent, acting on behalf of the Banks, may, at its option, lend under
this Section 2 upon the telephone request of an authorized officer of a Company
and, in the event Agent, acting on behalf of the Banks, makes any such Advance
upon a telephone request, the requesting officer shall, if so requested by
Agent, fax to Agent, on the same day as such telephone request, a Request for
Revolving Credit Advance. Company hereby authorizes Agent to disburse Advances
under this Section 2.3 pursuant to the telephone instructions of any person
purporting to be a person identified by name on a written list of persons
authorized by the Company to make Requests for Revolving Credit Advance on
behalf of the Company. Notwithstanding the foregoing, the Company acknowledges
that Company shall bear all risk of loss resulting from disbursements made upon
any telephone request, unless the Agent disburses Advances on the instructions
of a person not purporting to be a person in the aforementioned list or the
Agent otherwise acts with gross negligence or acts in a manner which constitutes
willful misconduct. Each telephone request for an Advance shall constitute a
certification of the matters set forth in the Request for Advance form as of the
date of such requested Advance.

         2.8 Disbursement of Revolving Credit Advances. (a) Upon receiving any
Request for Revolving Credit Advance from Company under Section 2.7 hereof,
Agent shall promptly notify each Bank by wire, telecopy, telex or by telephone
(confirmed by wire, telecopy or telex) of the amount of such Revolving Credit
Advance to be made and the date such Advance is to be made by said Bank pursuant
to its Percentage of the Revolving Credit Advance. Unless such Bank's commitment
to make Revolving Credit Advances hereunder shall have been suspended or
terminated in accordance with this Agreement, each Bank shall send the amount of
its Percentage of the Advance in same day funds in Dollars to Agent at the
office of Agent located at One

<PAGE>   33

Detroit Center, Detroit, Michigan 48226-3289 not later than 2:00 p.m. (Detroit
time) on the date of such Advance.

                  (b) Subject to submission of an executed Request for Revolving
         Credit Advance by Company without exceptions noted in the compliance
         certification therein and to the other terms and conditions hereof,
         Agent shall make available to Company the aggregate of the amounts so
         received by it from the Banks under this Section 2.8, in like funds,
         not later than 4:00 p.m. (Detroit time) on the date of such Revolving
         Credit Advance by credit to an account of Company maintained with Agent
         or to such other account or third party as Company may reasonably
         direct.

                  (c) Unless Agent shall have been notified by any Bank prior to
         the date of any proposed Revolving Credit Advance that such Bank does
         not intend to make available to Agent such Bank's Percentage of the
         Revolving Credit Advance, Agent may assume that such Bank has made such
         amount available to Agent on such date, as aforesaid and may, in its
         sole discretion and without obligation to do so, in reliance upon such
         assumption, make available to Company a corresponding amount. If such
         amount is not in fact made available to Agent by such Bank in
         accordance with Section 2.8(a), as aforesaid, Agent shall be entitled
         to recover such amount on demand from such Bank. If such Bank does not
         pay such amount forthwith upon Agent's demand therefor, the Agent shall
         promptly notify Company, and Company shall pay such amount to Agent.
         Agent shall also be entitled to recover from such Bank or from Company,
         as the case may be, interest on such amount in respect of each day from
         the date such amount was made available by Agent to Company to the date
         such amount is recovered by Agent, at a rate per annum equal to:

                  (i)      in the case of such Bank, the Federal Funds Effective
                           Rate for the first two (2) Business Days such amount
                           remains unpaid and at the rate of interest applicable
                           to the Revolving Credit Advances thereafter; or

                  (ii)     in the case of Company, the rate of interest then
                           applicable to the Revolving Credit Advance.

         The obligation of any Bank to make any Revolving Credit Advance
         hereunder shall not be affected by the failure of any other Bank to
         make any Revolving Credit Advance hereunder, and no Bank shall have any
         liability to the Company, the Agent, any other Bank, or any other party
         for another Bank's failure to make any loan or Revolving Credit Advance
         hereunder.

         2.9 Prime-based Advance in Absence of Election or Upon Default. If, as
to any outstanding Eurodollar-based Advance, Agent has not received payment on
the last day of the Interest Period applicable thereto, or does not receive a
timely Request for Revolving Credit Advance meeting the requirements of Section
2.7 hereof with respect to the refunding or conversion of such Advance, or,
subject to Section 2.6 hereof, if on such day a Default or Event

<PAGE>   34

of Default shall exist, the principal amount thereof which is not then prepaid
shall be converted automatically to a Prime-based Advance and the Agent shall
thereafter promptly notify Company of said action.

         2.10 Prepayment. Company may prepay all or part of the outstanding
balance of any Prime-based Advance(s) at any time, provided that the amount of
any partial prepayment shall be at least One Hundred Thousand Dollars ($100,000)
and the aggregate balance of Prime-based Advance(s) remaining outstanding under
the Revolving Credit Notes shall be at least One Hundred Thousand Dollars
($100,000). Company may prepay all or part of any Eurodollar-based Advance
(subject to not less than three (3) Business Days' notice to Agent) only on the
last day of the Interest Period applicable thereto, provided that the amount of
any such partial prepayment shall be at least One Hundred Thousand Dollars
($100,000), and the unpaid portion of such Advance which is not refunded or
converted under Section 2.7 shall be at least Two Million Dollars ($2,000,000).
Any prepayment made in accordance with this Section shall be without premium,
penalty or prejudice to the right to reborrow under the terms of this Agreement.
Any other prepayment of all or any portion of the Revolving Credit, whether by
acceleration, mandatory or required prepayment or otherwise, shall be subject to
Section 12.1 hereof, but otherwise without premium, penalty or prejudice.

         2.11 Revolving Credit Commitment Fee. From the date hereof to (but
excluding) the Revolving Credit Maturity Date, the Company shall pay to each of
the Banks, a Revolving Credit Commitment Fee determined by multiplying the
Applicable Commitment Fee Percentage times the average daily amount of such
Bank's Percentage of the Revolving Credit Aggregate Commitment then in effect,
calculated on a daily basis. The Revolving Credit Commitment Fee shall be
payable quarterly in arrears commencing November 1, 1999, and on the first day
of each May, August, November and February thereafter and at the Revolving
Credit Maturity Date, and shall be computed on the basis of a year of three
hundred sixty (360) days and assessed for the actual number of days elapsed.
Whenever any payment of the Revolving Credit Commitment Fee shall be due on a
day which is not a Business Day, the date for payment thereof shall be extended
to the next Business Day. Such Revolving Credit Commitment Fee shall be paid by
Company to the Agent. Upon receipt of such payment, Agent shall make prompt
payment to each Bank of its share of the Revolving Credit Commitment Fee. The
Revolving Credit Commitment Fee shall not be refundable under any circumstance.

         2.12 Reduction of Indebtedness; Revolving Credit Aggregate Commitment.
If at any time and for any reason the aggregate principal amount of Advances
outstanding hereunder to Company, plus the aggregate undrawn amount of any
Letters of Credit which shall be outstanding at such time, shall exceed the
lesser of the then applicable (i) Revolving Credit Aggregate Commitment and (ii)
Borrowing Base, Company shall immediately reduce any pending request for an
Advance on such day by the amount of such excess and, to the extent any excess
remains thereafter, immediately repay an amount of the Indebtedness equal to
such excess and, to the extent such Indebtedness consists of Letter of Credit
obligations, provide cash collateral on the basis set forth in Section 10.2
hereof. Company acknowledges that, in

<PAGE>   35

connection with any repayment required hereunder, it shall also be responsible
for the reimbursement of any prepayment or other costs required under Section
12.1 hereof; provided, however, that Company shall, in order to reduce any such
prepayment costs and expenses, first prepay such portion of the Indebtedness
then carried as a Prime-based Advance, if any.

         2.13 Optional Reduction or Termination of Revolving Credit Aggregate
Commitment. The Company may, upon at least five (5) Business Days' prior written
notice to Agent, permanently reduce the Revolving Credit Aggregate Commitment in
whole at any time, or in part from time to time, without premium or penalty,
provided that: (i) each partial reduction of the Revolving Credit Aggregate
Commitment shall be in an aggregate amount equal to at least One Million Dollars
($1,000,000) or a larger integral multiple of One Million Dollars ($1,000,000);
(ii) each reduction shall be accompanied by the payment of the Revolving Credit
Commitment Fee, if any, accrued to the date of such reduction; (iii) the Company
shall prepay in accordance with the terms hereof the amount, if any, by which
the aggregate unpaid principal amount of Swing Line Advances and Revolving
Credit Advances, plus the aggregate undrawn amount of outstanding Letters of
Credit, exceeds the amount of the Revolving Credit Aggregate Commitment, taking
into account the aforesaid reductions thereof, together with accrued but unpaid
interest on the principal amount of such prepaid Advances to the date of
prepayment; (iv) if the termination or reduction of the Revolving Credit
Aggregate Commitment requires the prepayment of a Eurodollar-based Advance or
Quoted Rate Advance, the termination or reduction may be made only on the last
Business Day of the then current Interest Period applicable to such Advance and
(v) no reduction shall reduce the amount of the Revolving Credit Aggregate
Commitment to an amount which is less than the sum of the aggregate undrawn
amount of any Letters of Credit outstanding at such time. Reductions of the
Revolving Credit Aggregate Commitment and any accompanying prepayments of the
Revolving Credit Notes shall be distributed by Agent to each Bank in accordance
with such Bank's Percentage thereof, and will not be available for reinstatement
by or readvance to the Company and any accompanying prepayments of the Swing
Line Note shall be distributed by Agent to the Swing Line Bank and will not be
available for reinstatement by or readvance to the Company. Any reductions of
the Revolving Credit Aggregate Commitment hereunder shall reduce each Bank's
portion thereof proportionately (based upon the applicable Percentages), and
shall be permanent and irrevocable. Any payments made pursuant to this Section
shall be applied first to outstanding Prime-based Advances under the Revolving
Credit, next to Swing Line Advances carried at the Prime-based Rate, next to
Eurodollar-based Advances of the Revolving Credit and then to Swing Line
Advances carried at the Quoted Rate.

         2.14 Extension of Revolving Credit Maturity Date. (a) Provided that no
Default or Event of Default has occurred and is continuing, Company may, by
written notice to Agent (with sufficient copies for each Bank) (which notice
shall be irrevocable and which shall not be deemed effective unless actually
received by Agent) prior to April 15, but not before January 1, of each fiscal
year (beginning with the fiscal year ending December 31, 2000), request that the
Banks extend the then applicable Revolving Credit Maturity Date to a date that
is one year later than the Revolving Credit Maturity Date then in effect (each
such request, a "Request"). Each

<PAGE>   36

Bank shall, not later than June 1 of such fiscal year, give written notice to
the Agent stating whether such Bank is willing to extend the Revolving Credit
Maturity Date as requested. If Agent has received the aforesaid written
approvals of such Request from each of the Banks, then, effective upon the date
of Agent's receipt of all such written approvals from the Banks, as aforesaid,
the Revolving Credit Maturity Date shall be so extended for an additional one
year period, the term Revolving Credit Maturity Date shall mean such extended
date and Agent shall promptly notify the Company that such extension has
occurred.

                  (b) If (i) any Bank gives the Agent written notice that it is
unwilling to extend the Revolving Credit Maturity Date as requested or (ii) any
Bank fails to provide written approval to Agent of such a Request on or before
June 1 of such fiscal year, then (w) the Banks shall be deemed to have declined
to extend the Revolving Credit Maturity Date, (x) the then-current Revolving
Credit Maturity Date shall remain in effect (with no further right on the part
of Company to request extensions thereof under this Section 2.14), and (y) the
commitments of the Banks to make Advances of the Revolving Credit hereunder
shall terminate on the Revolving Credit Maturity Date then in effect, and Agent
shall promptly notify Company thereof.

         2.15 Use of Revolving Credit Proceeds. Proceeds of the Revolving Credit
Notes shall be used, subject to the terms hereof, to finance the Transaction,
refinance existing Debt and to fund working capital needs or other general
corporate purposes of the Company (including acquisitions).

         3. LETTERS OF CREDIT.

         3.1 Letters of Credit. Subject to the terms and conditions of this
Agreement, Agent may through its Issuing Office, at any time and from time to
time from and after the date hereof until thirty (30) days prior to the
Revolving Credit Maturity Date, upon the written request of an Account Party
accompanied by a duly executed Letter of Credit Agreement and such other
documentation related to the requested Letter of Credit as the Agent may
reasonably require, issue standby or documentary Letters of Credit for the
account of such Account Party, in an aggregate undrawn amount for all Letters of
Credit issued hereunder at any one time outstanding, not to exceed the Letter of
Credit Maximum Amount. Each Letter of Credit shall have an expiration date not
later than one (1) year from its date of issuance; provided that each Letter of
Credit (including any renewal thereof) shall expire not later than ten (10)
Business Days prior to the Revolving Credit Maturity Date in effect on the date
of issuance thereof. The submission of all applications in respect of and the
issuance of each Letter of Credit hereunder shall be subject in all respects to
the Uniform Customs and Practices for Documentary Credits of the International
Chamber of Commerce, 1993 Revisions, ICC Publication No. 500 or, if applicable,
ISP 98, and any successor documentation thereto, as selected by the Issuing
Bank. In the event of any conflict between this Agreement and any Letter of
Credit Document other than any Letter of Credit, this Agreement shall control.

         3.2 Conditions to Issuance. No Letter of Credit shall be issued at the
request and for

<PAGE>   37

the account of any Account Party unless, as of the date of issuance of such
Letter of Credit:

                  (a)      the face amount of the Letter of Credit requested,
                           plus the undrawn portion of all other outstanding
                           Letters of Credit and the aggregate amount of all
                           unpaid Letter of Credit Obligations, does not exceed
                           the Letter of Credit Maximum Amount;

                  (b)      the face amount of the Letter of Credit requested,
                           plus the aggregate principal amount of all Advances
                           outstanding under the Revolving Credit Notes and the
                           Swing Line Note, plus the principal amount of all
                           Advances requested but not yet funded, plus the
                           aggregate undrawn portion of all other outstanding
                           Letters of Credit, do not exceed the lesser of the
                           then applicable (i) Revolving Credit Aggregate
                           Commitment and (ii) Borrowing Base;

                  (c)      the obligations of Company set forth in this
                           Agreement and the Loan Documents are valid, binding
                           and enforceable obligations of Company and the valid,
                           binding and enforceable nature of this Agreement and
                           the Loan Documents has not been disputed by Company;

                  (d)      both immediately before and immediately after
                           issuance of the Letter of Credit requested, no
                           Default or Event of Default exists;

                  (e)      the representations and warranties contained in this
                           Agreement and the Loan Documents are true in all
                           material respects as if made on such date;

                  (f)      the execution of the Letter of Credit Agreement with
                           respect to the Letter of Credit requested will not
                           violate the terms and conditions of any material
                           contract, agreement or other borrowing of Company;

                  (g)      the Account Party requesting the Letter of Credit
                           shall have delivered to Agent at its Issuing Office,
                           not less than five (5) Business Days prior to the
                           requested date for issuance (or such shorter time as
                           the Agent, in its sole discretion, may permit), the
                           Letter of Credit Agreement related thereto,
                           together with such other documents and materials as
                           may be reasonably required pursuant to the terms
                           thereof, and the terms of the proposed Letter of
                           Credit shall be satisfactory to Agent and its Issuing
                           Office in the exercise of its reasonable discretion;

                  (h)      no order, judgment or decree of any court, arbitrator
                           or governmental authority having competent
                           jurisdiction shall purport by its terms to enjoin or
                           restrain Agent from issuing the Letter of Credit, or
                           any Bank from taking an assignment of its Percentage
                           thereof pursuant to Section 3.6

<PAGE>   38

                           hereof, and no law, rule, regulation, request or
                           directive (whether or not having the force of law)
                           shall prohibit or request that Agent refrain from
                           issuing, or any Bank refrain from taking an
                           assignment of its Percentage of, the Letter of Credit
                           requested or letters of credit generally;

                  (i)      there shall have been no introduction of or change in
                           the interpretation of any law or regulation that
                           would make it unlawful or unduly burdensome for the
                           Agent to issue the requested Letter of Credit, no
                           general suspension of trading on the New York Stock
                           Exchange or any other national securities exchange,
                           no declaration of a general banking moratorium by
                           banking authorities in the United States, Michigan or
                           the respective jurisdictions in which the Banks, the
                           Account Party and the beneficiary of the requested
                           Letter of Credit are located, and no establishment of
                           any new restrictions on transactions involving
                           letters of credit or on banks materially affecting
                           the extension of credit by banks; and

                  (j)      Agent shall have received the issuance fee required
                           in connection with the issuance of such Letter of
                           Credit pursuant to Section 3.5 hereof.

Each Letter of Credit Agreement submitted to Agent pursuant hereto shall
constitute the certification by the Company and the Account Party of the matters
set forth in this Section 3.2 (a) through (f). The Agent shall be entitled to
rely on such certification without any duty of inquiry.

         3.3 Notice. Agent shall give notice, substantially in the form attached
as Exhibit C, to each Revolving Credit Bank of the issuance of each Letter of
Credit, not later than three (3) Business Days after issuance of each Letter of
Credit, specifying the amount thereof and the amount of such Bank's Percentage
thereof.

         3.4 Letter of Credit Fees. Company shall pay to the Agent for
distribution to the Banks in accordance with the Percentages, Letter of Credit
Fees as follows:

                  (a) A per annum Letter of Credit Fee (which shall be prorated
with respect to any Letter of Credit with an original or renewal term of less
than a full year) with respect to the undrawn amount of each Letter of Credit
based on the Applicable L/C Fee Percentage (determined with reference to
Schedule 1 of this Agreement), exclusive of the issuance fee of one-eighth of
one percentage point (1/8%) per annum on the face amount thereof to be paid to
Agent under Section 3.5 hereof.

                  (b) If any change in any law or regulation or in the
interpretation thereof by any court or administrative or governmental authority
charged with the administration thereof shall either (i) impose, modify or cause
to be deemed applicable any reserve, special deposit, limitation or similar
requirement against letters of credit issued by, or assets held by, or deposits
in or for the account of, Agent or any of the Banks or (ii) impose on Agent or
any of the Banks

<PAGE>   39

any other condition regarding this Agreement or the Letters of Credit, and the
result of any event referred to in clause (i) or (ii) above shall be to increase
in an amount deemed material by Agent or the Banks the cost or expense to Agent
or the Banks of issuing or maintaining or participating in any of the Letters of
Credit (which increase in cost or expense shall be determined by the Agent's or
such Bank's reasonable allocation of the aggregate of such cost increases and
expense resulting from such events), then, upon written demand by the Agent or
such Bank, as the case may be, the Company shall, within ten days following
demand for payment, pay to Agent or such Bank, as the case may be, from time to
time as specified by the Agent or such Bank, additional amounts which shall be
sufficient to compensate the Agent or such Bank for such increased cost and
expense, together with interest on each such amount from ten days after the date
demanded until payment in full thereof at the Prime-based Rate. A certificate as
to such increased cost or expense incurred by the Agent or such Bank, as the
case may be, as a result of any event mentioned in clause (i) or (ii) above,
shall be promptly submitted to the Company setting forth in reasonable detail
the basis for determining such additional amount and shall be conclusively
presumed to be correct, absent manifest error, as to the amount thereof.

                  (c) All payments by the Company to the Agent or the Banks
under this Section 3.4 shall be made in Dollars and in immediately available
funds at the Agent's Issuing Office or such other office of the Agent as may be
designated from time to time by written notice to the Company by the Agent. The
aforesaid fees shall be nonrefundable under all circumstances, shall be payable
quarterly in arrears on the first day of each calendar quarter, and shall be
calculated on the basis of a 360 day year and assessed for the actual number of
days from the date of the issuance thereof to the stated expiration thereof.

         3.5 Issuance Fees. In connection with the Letters of Credit, Company
shall pay to Agent a letter of credit issuance fee of one-eighth percentage
point (1/8%) per annum on the face amount of all Letters of Credit (prorated as
provided in Section 3.4). In addition to the Letter of Credit Fees, the Company
and the applicable Account Party shall pay, for the sole account of the Agent,
standard documentation, administration, payment and cancellation charges
assessed by Agent or its Issuing Office, at the times, in the amounts and on the
terms set forth or to be set forth from time to time in the standard fee
schedule of Agent's Issuing office in effect from time to time.

         3.6 Draws and Demands for Payment Under Letters of Credit.

                  (a) The Company and each applicable Account Party agrees to
pay to the Agent, on the day on which the Agent shall honor a draft or other
demand for payment presented or made under any Letter of Credit, an amount equal
to the amount paid by the Agent in respect of such draft or other demand under
such Letter of Credit and all expenses paid or incurred by the Agent relative
thereto. Unless the Company or the applicable Account Party shall have made such
payment to the Agent on such day, upon each such payment by the Agent, the Agent
shall be deemed to have disbursed to the Company or the applicable Account
Party, and the Company or the applicable Account Party shall be deemed to have
elected to substitute for its reimbursement obligation, a Prime- based Advance
from the Banks in an amount equal to the

<PAGE>   40

amount so paid by the Agent in respect of such draft or other demand under such
Letter of Credit. Such Prime-based Advance shall be disbursed notwithstanding
any failure to satisfy any conditions for disbursement of any Advance set forth
in Article 2 hereof and, to the extent of the Prime-based Advance so disbursed,
the reimbursement obligation of the Company or the applicable Account Party to
the Agent under this Section 3.6 shall be deemed satisfied.

                  (b) If the Agent shall honor a draft or other demand for
payment presented or made under any Letter of Credit, the Agent shall provide
notice thereof to the Company and the applicable Account Party on the date such
draft or demand is honored, and to each Bank on such date unless the Company or
applicable Account Party shall have satisfied its reimbursement obligation under
Section 3.6(a) by payment to the Agent on such date. The Agent shall further use
reasonable efforts to provide notice to the Company or applicable Account Party
prior to honoring any such draft or other demand for payment, but such notice,
or the failure to provide such notice, shall not affect the rights or
obligations of the Agent with respect to any Letter of Credit or the rights and
obligations of the parties hereto, including without limitation the obligations
of the Company or applicable Account Party under Section 3.6(a) hereof.

                  (c) Upon issuance by the Agent of each Letter of Credit
hereunder and upon execution of this Agreement with respect to the Existing
Letters of Credit, each Bank shall automatically acquire a pro rata risk
participation interest in such Letter of Credit and related Letter of Credit
Payment based on its respective Percentage. Each Bank, on the date a draft or
demand under any Letter of Credit is honored, shall make its Percentage share of
the amount paid by the Agent, and not reimbursed by the Company or applicable
Account Party by payment to the Agent on such day, available in immediately
available funds at the principal office of the Agent for the account of the
Agent. If and to the extent such Bank shall not have made such pro rata portion
available to the Agent, such Bank, the Company and the applicable Account Party
severally agree to pay to the Agent forthwith on demand such amount together
with interest thereon, for each day from the date such amount was paid by the
Agent until such amount is so made available to the Agent at a per annum rate
equal to the interest rate applicable during such period to the related Advance
disbursed under Section 3.6(a) in respect of the reimbursement obligation of the
Company and the applicable Account Party for Letters of Credit. If such Bank
shall pay such amount to the Agent together with such interest, such amount so
paid with respect to Letters of Credit shall constitute a Prime-based Advance by
such Bank disbursed in respect of the reimbursement obligation of the Company or
applicable Account Party under Section 3.6(a) for purposes of this Agreement,
effective as of the date such amount was paid by the Agent. The failure of any
Bank to make its pro rata portion of any such amount paid by the Agent available
to the Agent shall not relieve any other Bank of its obligation to make
available its pro rata portion of such amount, but no Bank shall be responsible
for failure of any other Bank to make such pro rata portion available to the
Agent.

                  (d) Nothing in this Agreement shall be construed to require or
authorize any Bank to issue any Letter of Credit, it being recognized that the
Agent shall be the sole issuer of Letters of Credit under this Agreement.

<PAGE>   41

         3.7 Obligations Irrevocable. The obligations of Company and any Account
Party to make payments to Agent or the Banks with respect to Letter of Credit
Obligations under Section 3.6 hereof, shall be unconditional and irrevocable and
not subject to any qualification or exception whatsoever, including, without
limitation:

                  (a) Any lack of validity or enforceability of any Letter of
Credit or any documentation relating to any Letter of Credit or to any
transaction related in any way to such Letter of Credit (the "Letter of Credit
Documents");

                  (b) Any amendment, modification, waiver, consent, or any
substitution, exchange or release of or failure to perfect any interest in
collateral or security, with respect to any of the Letter of Credit Documents;

                  (c) The existence of any claim, setoff, defense or other right
which the Company or any Account Party may have at any time against any
beneficiary or any transferee of any Letter of Credit (or any persons or
entities for whom any such beneficiary or any such transferee may be acting),
the Agent or any Bank or any other person or entity, whether in connection with
any of the Letter of Credit Documents, the transactions contemplated herein or
therein or any unrelated transactions;

                  (d) Any draft or other statement or document presented under
any Letter of Credit proving to be forged, fraudulent, invalid or insufficient
in any respect or any statement therein being untrue or inaccurate in any
respect;

                  (e) Payment by the Agent to the beneficiary under any Letter
of Credit against presentation of documents which do not comply with the terms
of the Letter of Credit, including failure of any documents to bear any
reference or adequate reference to such Letter of Credit;

                  (f) Any failure, omission, delay or lack on the part of the
Agent or any Bank or any party to any of the Letter of Credit Documents to
enforce, assert or exercise any right, power or remedy conferred upon the Agent,
any Bank or any such party under this Agreement, any of the Loan Documents or
any of the Letter of Credit Documents, or any other acts or omissions on the
part of the Agent, any Bank or any such party; or

                  (g) Any other event or circumstance that would, in the absence
of this Section 3.7, result in the release or discharge by operation of law or
otherwise of Company or any Account Party from the performance or observance of
any obligation, covenant or agreement contained in Section 3.6.

No setoff, counterclaim, reduction or diminution of any obligation or any
defense of any kind or nature which Company or any Account Party has or may have
against the beneficiary of any Letter of Credit shall be available hereunder to
Company or any Account Party against the Agent or any Bank. Nothing contained in
this Section 3.7 shall be deemed a waiver of any claim or to

<PAGE>   42

prevent Company or the Account Parties, after satisfaction in full of the
absolute and unconditional obligations of Company and the Account Parties
hereunder, from asserting in a separate action any claim, defense, set off or
other right which they (or any of them) may have against Agent or any Bank.

         3.8 Risk Under Letters of Credit. (a) In assigning and the handling of
Letters of Credit and any security therefor, or any documents or instruments
given in connection therewith, Agent shall have the sole right to take or
refrain from taking any and all actions under or upon the Letters of Credit.

                  (b) Subject to other terms and conditions of this Agreement,
Agent shall issue the Letters of Credit and shall hold the documents related
thereto in its own name and shall make all collections thereunder and otherwise
administer the Letters of Credit in accordance with Agent's regularly
established practices and procedures and, except pursuant to Section 13.3
hereof, Agent will have no further obligation with respect thereto. In the
administration of Letters of Credit, Agent shall not be liable for any action
taken or omitted on the advice of counsel, accountants, appraisers or other
experts selected by Agent with due care and Agent may rely upon any notice,
communication, certificate or other statement from Company, any Account Party,
beneficiaries of Letters of Credit, or any other Person which Agent believes to
be authentic. Agent will, upon request, furnish the Banks with copies of Letter
of Credit Agreements, Letters of Credit and documents related thereto.

                  (c) In connection with the issuance and administration of
Letters of Credit and the assignments hereunder, Agent makes no representation
and shall, subject to Section 3.7 hereof, have no responsibility with respect to
(i) the obligations of Company or any Account Party or, the validity,
sufficiency or enforceability of any document or instrument given in connection
therewith, (ii) the financial condition of, any representations made by, or any
act or omission of Company, the applicable Account Party or any other Person, or
(iii) any failure or delay in exercising any rights or powers possessed by Agent
in its capacity as issuer of Letters of Credit in the absence of its gross
negligence or willful misconduct. Each of the Banks expressly acknowledge that
they have made and will continue to make their own evaluations of Company's and
the Account Parties' creditworthiness without reliance on any representation of
Agent or Agent's officers, agents and employees.

                  (d) If at any time Agent shall recover any part of any
unreimbursed amount for any draw or other demand for payment under a Letter of
Credit, or any interest thereon, Agent shall receive same for the pro rata
benefit of the Banks in accordance with their respective Percentage interests
therein and shall promptly deliver to each Bank its share thereof, less such
Bank's pro rata share of the costs of such recovery, including court costs and
attorney's fees. If at any time any Bank shall receive from any source
whatsoever any payment on any such unreimbursed amount or interest thereon in
excess of such Bank's Percentage share of such payment, such Bank will promptly
pay over such excess to Agent, for redistribution in accordance with this
Agreement.

<PAGE>   43

         3.9 Indemnification. (a) The Company and each Account Party hereby
indemnifies and agrees to hold harmless the Banks and the Agent, and their
respective officers, directors, employees and agents, from and against any and
all claims, damages, losses, liabilities, costs or expenses of any kind or
nature whatsoever which the Banks or the Agent or any such person may incur or
which may be claimed against any of them by reason of or in connection with any
Letter of Credit, and neither any Bank nor the Agent or any of their respective
officers, directors, employees or agents shall be liable or responsible for: (i)
the use which may be made of any Letter of Credit or for any acts or omissions
of any beneficiary in connection therewith; (ii) the validity, sufficiency or
genuineness of documents or of any endorsement thereon, even if such documents
should in fact prove to be in any or all respects invalid, insufficient,
fraudulent or forged; (iii) payment by the Agent to the beneficiary under any
Letter of Credit against presentation of documents which do not comply with the
terms of any Letter of Credit (unless such payment resulted from the gross
negligence or willful misconduct of the Agent), including failure of any
documents to bear any reference or adequate reference to such Letter of Credit;
(iv) any error, omission, interruption or delay in transmission, dispatch or
delivery of any message or advice, however transmitted, in connection with any
Letter of Credit; or (v) any other event or circumstance whatsoever arising in
connection with any Letter of Credit; provided, however, that Company and
Account Parties shall not be required to indemnify the Banks and the Agent and
such other persons, and the Banks and Agent shall be liable to the Company and
the Account Parties to the extent, but only to the extent, of any direct, as
opposed to consequential or incidental, damages suffered by Company and the
Account Parties which were caused by the Agent's gross negligence, willful
misconduct or wrongful dishonor of any Letter of Credit after the presentation
to it by the beneficiary thereunder of a draft or other demand for payment and
other documentation strictly complying with the terms and conditions of such
Letter of Credit.

                  (b) It is understood that in making any payment under a Letter
of Credit the Agent will rely on documents presented to it under such Letter of
Credit as to any and all matters set forth therein without further investigation
and regardless of any notice or information to the contrary. It is further
acknowledged and agreed that Company or an Account Party may have rights against
the beneficiary or others in connection with any Letter of Credit with respect
to which the Banks are alleged to be liable and it shall be a condition of the
assertion of any liability of the Banks under this Section that Company or
applicable Account Party shall contemporaneously pursue all remedies in respect
of the alleged loss against such beneficiary and any other parties obligated or
liable in connection with such Letter of Credit and any related transactions.

         3.10 Right of Reimbursement. Each Bank agrees to reimburse the Agent on
demand, pro rata in accordance with their Percentages, for (i) the out-of-pocket
costs and expenses of the Agent to be reimbursed by Company or any Account Party
pursuant to any Letter of Credit Agreement or any Letter of Credit, to the
extent not reimbursed by Company or Account Party and (ii) any and all
liabilities, obligations, losses, damages, penalties, actions, judgments, suits,
costs, fees, expenses or disbursements of any kind and nature whatsoever which
may be imposed on, incurred by or asserted against Agent (in its capacity as
issuer of any Letter of Credit) in any

<PAGE>   44

way relating to or arising out of this Agreement, any Letter of Credit, any
documentation or any transaction relating thereto, or any Letter of Credit
Agreement, except to the extent that such liabilities, losses, costs or expenses
were incurred by Agent solely as a result of Agent's gross negligence or willful
misconduct.

         3.11 Densitron Letter of Credit. The Densitron Letter of Credit shall
be subject to the provisions of the Letter of Credit Addendum set forth in
Schedule 3.11 and to the extent of any inconsistency between the provisions of
such Addendum and the provisions of this Section 3, the provisions of such
Addendum shall control.

         4.   SWING LINE CREDIT.

         4.1  Swing Line Advances. The Swing Line Bank shall, on the terms and
subject to the conditions hereinafter set forth, make one or more advances (each
such advance being a "Swing Line Advance") to Company from time to time on any
Business Day during the period from the date hereof to (but excluding) the
Revolving Credit Maturity Date in an aggregate amount not to exceed Five Million
Dollars ($5,000,000) at any time outstanding; provided, however, that after
giving effect to all Swing Line Advances and all Revolving Credit Advances
requested to be made on such date, the aggregate principal amount of all
outstanding Advances and Advances requested but not yet funded and the undrawn
portion of all outstanding Letters of Credit shall not exceed the lesser of the
then applicable (i) Revolving Credit Aggregate Commitment and (ii) Borrowing
Base. All Swing Line Advances shall be evidenced by the Swing Line Note, under
which advances, repayments and readvances may be made, subject to the terms and
conditions of this Agreement. Each Swing Line Advance shall mature and the
principal amount thereof shall be due and payable by Company on the last day of
the Interest Period applicable thereto. In no event whatsoever shall any
outstanding Swing Line Advance be deemed to reduce, modify or affect any Bank's
commitment to make Revolving Credit Advances based upon its Percentage.

         4.2  Accrual of Interest. Each Swing Line Advance shall, from time to
time after the date of such Advance, bear interest at its Applicable Interest
Rate. The amount and date of each Swing Line Advance, its Applicable Interest
Rate, its Interest Period, and the amount and date of any repayment shall be
noted on Agent's records, which records will be conclusive evidence thereof,
absent demonstrable error; provided, however, that any failure by the Agent to
record any such information shall not relieve Company of its obligation to repay
the outstanding principal amount of such Advance, all interest accrued therein
and any amount payable with respect thereto in accordance with the terms of this
Agreement and the Loan Documents.

         4.3  Prime-based Interest Payments. Interest on the unpaid balance of
all Prime-based Advances from time to time outstanding under the Swing Line Note
shall accrue at a per annum interest rate equal to the Prime-based Rate, and
shall be payable in immediately available funds on the last day of the Interest
Period applicable thereto. Interest accruing at the Prime-based Rate shall be
computed on the basis of a 360 day year and assessed for the actual number of
days elapsed from the first day of the Interest Period applicable thereto to,
but not including, the last day thereof, and in such computation effect shall be
given to any change in the interest rate

<PAGE>   45

resulting from a change in the Prime-based Rate on the date of such change in
the Prime-based Rate.

         4.4 Quoted Rate Advance Interest Payments. Interest on each Quoted Rate
Advance shall accrue at its Quoted Rate and shall be payable in immediately
available funds on the last day of the Interest Period applicable thereto.
Interest accruing at the Quoted Rate shall be computed on the basis of a 360 day
year and assessed for the actual number of days elapsed from the first day of
the Interest Period applicable thereto to, but not including the last day
thereof.

         4.5 Interest on Default. Notwithstanding anything to the contrary set
forth in Section 4.3, in the event and so long as any Event of Default shall
exist, in the case of any Event of Default under Sections 10.1(a) or 10.1(k),
immediately upon the occurrence thereof, and in the case of all other Events of
Default, upon notice from the Majority Banks, interest shall be payable daily on
(i) all Swing Line Advances from time to time outstanding which bear interest at
the Prime-based Rate at a per annum rate equal to the Prime-based Rate plus
three percent (3%) and (ii) all Swing Line Advances from time to time
outstanding which bear interest at the Quoted Rate at a per annum rate equal to
the Applicable Interest Rate plus three percent (3%) for the remainder of the
existing Interest Period and at all such other times at a per annum rate equal
to the Prime-based Rate plus three percent (3%).

         4.6 Requests for Swing Line Advances. Company may request a Swing Line
Advance only after delivery to Swing Line Bank of a Request for Swing Line
Advance executed by an authorized officer of Company, subject to the following
and to the remaining provisions hereof:

                  (a) each such Request for Swing Line Advance shall set forth
the information required on the Request for Swing Line Advance form annexed
hereto as Exhibit D, including without limitation:

                           (i) the proposed date of Swing Line Advance, which
         must be a Business Day;

                           (ii) whether such Swing Line Advance is to be a
         Prime-based Advance or a Quoted Rate Advance; and

                           (iii) the duration of the Interest Period applicable
         thereto;

                  (b) each such Request for Swing Line Advance shall be
delivered to Swing Line Bank by 12:00 p.m. (Detroit time) on the proposed date
of the Swing Line Advance;

                  (c) the principal amount of such requested Swing Line Advance,
plus the principal amount of all other Advances then outstanding hereunder, plus
the principal amount of all other Advances requested but not yet funded, plus
the aggregate undrawn portion of any Letter of Credit which shall be outstanding
as of the date of the requested Swing Line Advance,

<PAGE>   46

plus the aggregate face amount of Letters of Credit requested but not yet
issued, shall not exceed the lesser of the then applicable (i) Revolving Credit
Aggregate Commitment and (ii) Borrowing Base;

                  (d) the principal amount of such Swing Line Advance shall be
at least Two Hundred Fifty Thousand Dollars ($250,000);

                  (e) each Request for Swing Line Advance, once delivered to
Swing Line Bank, shall not be revocable by Company, and shall constitute and
include a certification by the Company as of the date thereof that:

                           (i) both before and after the Swing Line Advance, the
         obligations of the Company set forth in this Agreement and the Loan
         Documents, as applicable, are valid, binding and enforceable
         obligations of such parties;

                           (ii) to the best knowledge of Company all conditions
         to Advances have been satisfied;

                           (iii) both before and after the Advance, there is no
         Default or Event of Default in existence; and

                           (iv) both before and after the Advance, the
         representations and warranties contained in this Agreement and the Loan
         Documents are true and correct in all material respects.

Swing Line Bank shall promptly deliver to Agent by telecopier a copy of any
Request for Swing Line Advance received.

         4.7 Disbursement of Swing Line Advances. Subject to submission of an
executed Request for Swing Line Advance by Company without exceptions noted in
the compliance certification therein and to the other terms and conditions
hereof, Swing Line Bank shall make available to Company the amount so requested,
in same day funds, not later than 4:00 p.m. (Detroit time) on the date of such
Swing Line Advance by credit to an account of Company maintained with Swing Line
Bank or to such other account or third party as Company may reasonably direct.
Swing Line Bank shall promptly notify Agent of any Swing Line Advance by
telephone, telex or telecopier.

         4.8 Prepayment. Company may prepay all or part of the outstanding
balance of any Prime-based Advance(s) (subject to not less than one (1)
Business Day's notice to Agent) at any time, provided that the amount of any
partial prepayment shall be at least Fifty Thousand Dollars ($50,000), provided
that the aggregate amount remaining outstanding under each Swing Line Advance
shall be at least Two Hundred Fifty Thousand Dollars ($250,000). Company may
prepay all or any part of any Quoted Rate Advance (subject to not less than one
(1) Business

<PAGE>   47

Day's notice to Agent); provided that the amount of any such partial prepayment
shall be at least Fifty Thousand Dollars ($50,000), provided that the aggregate
amount remaining outstanding under each Swing Line Advance shall be at least Two
Hundred Fifty Thousand Dollars ($250,000); provided, further, however, that if
the prepayment of a Quoted Rate Advance is made on a day other than the last
Business Day of the Interest Period applicable thereto, then, pursuant to
Section 12.1, Company shall compensate the Banks for any losses. Any prepayment
made in accordance with this Section shall be without premium, penalty or
prejudice to the right to reborrow under the terms of this Agreement.

         4.9 Refunding of or Participation Interest in Swing Line Advances. (a)
The Agent, at any time in its sole and absolute discretion, may (or, upon the
request of the Swing Line Bank, shall) on behalf of the Company (which hereby
irrevocably directs the Agent to act on its behalf) request each Bank (including
the Swing Line Bank in its capacity as a Bank) to make a Revolving Credit
Advance in an amount equal to such Bank's Percentage of the principal amount of
the Swing Line Advances (the "Refunded Swing Line Advances") outstanding on the
date such notice is given; provided that (i) at any time as there shall be a
Swing Line Advance outstanding for more than thirty days, the Agent shall, on
behalf of the Company (which hereby irrevocably directs the Agent to act on its
behalf), promptly request each Bank (including the Swing Line Bank) to make a
Revolving Credit Advance in an amount equal to such Bank's Percentage of the
principal amount of such outstanding Swing Line Advance, (ii) Swing Line
Advances shall be prepaid by the Company in accordance with the provisions of
Section 4.8 hereof and (iii) Quoted Rate Advances which are converted to
Revolving Credit Advances at the request of the Swing Line Bank at a time when
no Default or Event of Default has occurred and is continuing, shall not be
subject to Section 12.1 and no losses, costs or expenses may be assessed by the
Swing Line Lender against Company or the Banks as a consequence of such
conversion. Unless any of the events described in Section 10.1(l) shall have
occurred (in which event the procedures of paragraph (b) of this Section 4.9
shall apply) and regardless of whether the conditions precedent set forth in
this Agreement to the making of a Revolving Credit Advance are then satisfied,
each Bank shall make the proceeds of its Revolving Credit Advance available to
the Agent for the ratable benefit of the Swing Line Bank at the office of the
Agent specified in the signature pages hereto prior to 11:00 a.m. Detroit time,
in funds immediately available on the Business Day next succeeding the date such
notice is given. The proceeds of such Revolving Credit Advances shall be
immediately applied to repay the Refunded Swing Line Advances.

                  (b) If, prior to the making of a Revolving Credit Advances
pursuant to paragraph (a) of this Section 4.9, one of the events described in
Section 10.1(k) shall have occurred, each Bank will, on the date such Revolving
Credit Advance was to have been made, purchase from the Swing Line Bank an
undivided participating interest in the Refunded Swing Line Advance in an amount
equal to its Percentage of such Refunded Swing Line Advance. Each Bank will
immediately transfer to the Agent, in immediately available funds, the amount of
its participation and upon receipt thereof the Agent will deliver to such Bank a
Swing Line Bank Participation Certificate in the form of Exhibit F dated the
date of receipt of such funds and in

<PAGE>   48

such amount.

                  (c) Each Bank's obligation to make Revolving Credit Advances
and to purchase participation interests in accordance with clauses (a) and (b)
above shall be absolute and unconditional and shall not be affected by any
circumstance, including, without limitation, (i) any set-off, counterclaim,
recoupment, defense or other right which such Bank may have against Swing Line
Bank, the Company or any other Person for any reason whatsoever; (ii) the
occurrence or continuance of any Default or Event of Default; (iii) any adverse
change in the condition (financial or otherwise) of the Company or any other
Person; (iv) any breach of this Agreement by the Company or any other Person;
(v) any inability of the Company to satisfy the conditions precedent to
borrowing set forth in this Agreement on the date upon which such participating
interest is to be purchased or (vi) any other circumstance, happening or event
whatsoever, whether or not similar to any of the foregoing. If any Bank does not
make available to the Agent the amount required pursuant to clause (a) or (b)
above, as the case may be, the Agent shall be entitled to recover such amount on
demand from such Bank, together with interest thereon for each day from the date
of non-payment until such amount is paid in full at the Federal Funds Effective
Rate for the first two Business Days and at the Alternate Base Rate thereafter.

         5.  TERM CREDIT

         5.1 Term Loan. Subject to the terms and conditions of this Agreement,
each Bank, severally and for itself alone, agrees to loan to Company on the
Effective Date, an amount equal to its Percentage of the Term Loan. At the time
of the borrowing under this Section, Company agrees to execute a separate Term
Note for each Bank with appropriate insertions (acceptable to the Banks in form
and substance) as evidence of the Indebtedness under this Section 5.1.

         5.2 Repayment. The Indebtedness represented by the Term Notes shall be
repaid in equal quarterly principal installments each in the amount set forth
below, plus accrued interest as provided in Section 5.4. Such payments shall
commence on February 1, 2000, and shall continue on the first Business Day of
each May, August, November and February thereafter, until the Term Loan Maturity
Date, when the entire unpaid principal balance of such Indebtedness and accrued
interest thereon, shall be due and payable in full.

<TABLE>
<CAPTION>
                  Installment No.                     Amount
                  ---------------                     ------
<S>                                                   <C>
                  1 through 3                         $1,000,000
                  4 through 15                        $1,250,000
                  16 through 19                       $1,750,000

</TABLE>

         5.3 Disbursement of Term Loan. Subject to the satisfaction of the
conditions of the making of the Term Loan, each Bank shall, not later than 2:00
p.m. (Detroit time) on the date of execution of this Agreement, make available
the amount of its Percentage of the Term Loan in immediately available funds to
Agent, at the office of Agent located at 500 Woodward Avenue, Detroit, Michigan
48275. Agent shall make available to Company not later than 4:00 p.m.

<PAGE>   49

(Detroit time) on such date the aggregate of the amounts so received by it in
like funds by credit to an account of Company maintained with Agent or to such
other account or third party as Company may direct. Unless Agent shall have been
notified by any Bank that such Bank does not intend to make available to Agent
such Bank's pro rata share of the Term Loan, Agent may assume that such Bank has
made such amount available to Agent on such date and may, in reliance upon such
assumption, make available to Company a corresponding amount. If such amount is
not in fact made available to Agent by such Bank, Agent shall be entitled to
recover such amount on demand from such Bank. If such Bank does not pay such
amount forthwith upon Agent's demand therefor, the Agent shall promptly notify
Company and Company shall pay such amount to Agent. Agent shall also be entitled
to recover from such Bank or Company, as the case may be, interest on such
amount in respect of each day from the date such amount was made available by
Agent to Company to the date such amount is recovered by Agent, at a rate per
annum equal to the highest rate of interest then applicable to the Term Loan.
The obligation of any Bank to fund its Percentage of the Term Loan shall not be
affected by the failure of any other Bank to fund its Percentage of the Term
Loan and no Bank shall have any liability to the Company, the Agent, or any
other Bank for another Bank's failure to fund its Percentage of the Term Loan
hereunder.

         5.4 Interest. (a) Indebtedness outstanding under each Bank's Term Note
and the Term Loan shall bear interest from the Effective Date on the unpaid
principal balance thereof from time to time outstanding, at a rate per annum
equal to the Prime-based Rate or the Eurodollar-based Rate as the Company may
elect subject to the provisions of this Agreement. With respect to any portion
of the Term Loan with respect to which the Applicable Interest Rate is the
Prime-based Rate, interest shall be payable quarterly on the first day of each
February, May, August and November, commencing on November 1, 1999, and at
maturity (whether by acceleration or otherwise). Interest on any portion of the
Term Loan with respect to which the Applicable Interest Rate is the Eurodollar-
based Rate shall be payable on the last day of each Interest Period applicable
thereto unless the applicable Interest Period is more than three (3) months, in
which case interest shall be payable quarterly commencing on the date which is
three (3) months from the first day of such Interest Period and shall also be
payable on the last day of such Interest Period.

                  (b) Notwithstanding anything to the contrary set forth in
Sections 5.4(a), in the event and so long as any Event of Default shall exist,
in the case of any Event of Default under Sections 10.1(a) or 10.1(k),
immediately upon the occurrence thereof, and in the case of all other Events of
Default, upon notice from the Majority Banks, interest shall be payable daily on
all Eurodollar-based Advances of the Term Loan from time to time outstanding
(and all other monetary obligations of Company hereunder and under the other
Loan Documents) at a per annum rate equal to the Applicable Interest Rate (and,
with respect to Eurodollar-based Advances calculated on the basis of the maximum
Margin) plus three percent (3%) for the remainder of the then existing Interest
Period, if any, and at all other such times and for all Prime-based Advances of
the Term Loan from time to time outstanding, at a per annum rate equal to the
Prime-based Rate plus three percent (3%).

<PAGE>   50

                  (c) At the time the Term Loan is made, Company shall designate
the initial Applicable Interest Rate(s) with respect thereto.

         5.5 Interest Periods. (a) Each Interest Period for a portion of the
Term Loan with respect to which the Applicable Interest Rate is the
Eurodollar-based Rate shall commence on the date such rate is selected pursuant
to Section 5.4(b) or 5.6 hereof or on the last day of the immediately preceding
Interest Period and shall end on the date three (3) months thereafter.

         (b) The Company shall elect the initial Interest Period applicable to
any portion of the Term Loan with respect to which the Applicable Interest Rate
is the Eurodollar-based Rate by its Notice of Term Rate given to the Agent
pursuant to Section 5.5 and subsequent Interest Periods by its Notice of Term
Rate given to the Agent pursuant to Section 5.7, as the case may be. Provided
that no Event of Default shall have occurred and be continuing, the Company may
elect to continue a portion of the Term Loan with respect to which the
Applicable Interest Rate is the Eurodollar-based Rate by giving irrevocable
written notice thereof to the Agent by its Notice of Term Rate, not less than
three Business Days prior to the last day of the then current Interest Period
applicable to such portion of the Term Loan, specifying the duration of the
succeeding Interest Period therefor. The Agent shall give at least two Business
Days' prior written, telephonic or telegraphic notice to each Bank specifying
the Applicable Interest Rate and the duration of the succeeding Interest Period
therefor. If the Agent does not receive timely notice of the election and the
Interest Period elected by the Company, the Company shall be deemed to have
elected to convert such Applicable Interest Rate to the Prime-based Rate at the
end of the then current Interest Period.

         (c) The principal amount of that portion of the Term Loan which bears
interest at the Eurodollar-based Rate having the same Interest Period shall be
at least $2,000,000 (or the entire indebtedness outstanding under the Term Notes
if less than $2,000,000 in the aggregate) or any larger amount in $100,000
increments and at any time there shall not be in effect more than five (5)
Interest Periods applicable to the Term Loan.

         5.6 Conversion of Loans. Provided that no Event of Default shall have
occurred and be continuing, the Company may, on any Business Day, convert the
Applicable Interest Rate with respect to a portion of the Term Loan to another
Applicable Interest Rate, provided that any conversion of a Term Loan with
respect to which the Applicable Interest Rate is the Eurodollar-based Rate shall
be made only on the last Business Day of the then current Interest Period
applicable to such portion of the Term Loan. If the Company desires to convert
an Applicable Interest Rate, it shall give the Agent irrevocable written notice
thereof not less than three Business Days' prior to the effective date of any
such change specifying the date of such conversion, the Applicable Interest Rate
elected and, if the conversion is into a portion of Term Loan with respect to
which the Applicable Interest Rate is the Eurodollar-based Rate, the duration of
the first Interest Period therefor. The Agent shall give at least three Business
Days' prior written, telephonic or telegraphic notice to each Bank specifying
the date of such

<PAGE>   51

conversion, the Applicable Interest Rate elected, and, if applicable, the
duration of the first Interest Period therefor.

         5.7 Optional Prepayments. (a) At its option and upon three (3) Business
Days' prior written, telephonic or telegraphic notice to the Agent, the Company
may prepay the Term Loan in whole or in part from time to time, without premium
or penalty but with accrued interest on the principal being prepaid to the date
of such prepayment, provided that: (i) in the case of a portion of the Term Loan
bearing interest at the Prime-based Rate each partial prepayment shall be in an
amount not less than $100,000 or an integral multiple thereof; (ii) in the case
of a portion of the Term Loan bearing interest at the Eurodollar-based Rate,
each partial prepayment shall be in an amount not less than $100,000, and such
portion of the Term Loan may only be prepaid on the last Business Day of the
then current Interest Period with respect thereto. The aggregate amount
remaining outstanding under that portion of the Term Loan which bears interest
at the Eurodollar-based Rate having the same Interest Period shall be at least
Two Million Dollars ($2,000,000) (or the entire indebtedness outstanding under
the Term Notes if less than $2,000,000 in the aggregate).

                  (b) Each prepayment under this Section 5.7 shall be made to
the Agent, and promptly upon receipt thereof, the Agent shall remit to each Bank
its pro rata share thereof. In its notice of prepayment, the Company shall
specify the date of prepayment and the amount of the prepayment. Each partial
prepayment of the Term Loan shall be applied to the principal payments due
thereunder in the inverse order of their maturities.

         5.8 Mandatory Prepayment of Term Loans.

         (a) Immediately upon receipt by a Company or any Subsidiary of any Net
Cash Proceeds from any Asset Sale, the Company shall prepay the Term Loans by an
amount equal to one hundred percent (100%) of such Net Cash Proceeds.

         (b) Mandatory prepayments under this Section 5.8 shall be in addition
to any scheduled installments or optional prepayments made prior thereto and
shall be subject to Section 12. Each mandatory prepayment of a Term Loan shall
be applied to the principal payments due thereunder in the inverse order of
their maturities as follows: first to any portion of the Term Loan bearing
interest at the Prime-based Rate, next to any portion of the Term Loan bearing
interest at the Eurodollar-based Rate which have Interest Periods ending on the
date of payment, then to any remaining Eurodollar-based portion of the Term
Loan. All prepayments of the Term Loans hereunder shall be made to the Agent for
distribution ratably to the Banks.

         (c) To the extent that, on the date any mandatory prepayment of the
Term Loans under this Section 5.8 is due, the Indebtedness under the Term Notes
or any other Indebtedness to be prepaid is being carried, in whole or in part,
at the Eurodollar-based Rate and no Default or Event of Default has occurred and
is continuing, the Company may deposit the amount of such mandatory prepayment
in a cash collateral account to be held by the Agent, for and on behalf of

<PAGE>   52

the Banks (which shall be an interest-bearing account), on such terms and
conditions as are reasonably acceptable to Agent and the Majority Banks. Subject
to the terms and conditions of said cash collateral account, sums on deposit in
said cash collateral account shall be applied (until exhausted) to reduce the
principal balance of the Term Loans on the last day of each Interest Period
attributable to the Eurodollar-based advances of the Term Loans.

         5.10 Use of Term Loan Proceeds. The proceeds of the Term Notes shall be
used to pay the amounts payable by Company in connection with the consummation
of the Transaction and to refinance existing term indebtedness owed to the
Banks.

         6.  CONDITIONS.

         The obligations of Banks to make Advances and the Term Loan or issue
Letters of Credit pursuant to this Agreement are subject to the following
conditions:

         6.1 Execution of Loan Documents. Company shall have executed and
delivered to Agent for the account of each Bank, the Revolving Credit Notes, the
Term Notes, the Swing Line Note and this Agreement (including all schedules,
exhibits, certificates, opinions, financial statements and other documents to be
delivered pursuant hereto), and, as applicable, the Loan Documents, and such
Revolving Credit Notes, Term Notes, Swing Line Note the Loan Documents and this
Agreement shall be in full force and effect.

         6.2 Corporate Authority. Agent shall have received, with a counterpart
thereof for each Bank: (i) certified copies of resolutions of the Board of
Directors of Company and each Guarantor evidencing approval of the Loan
Documents to which each such Person is a party and authorizing the execution and
delivery thereof and the borrowing hereunder, as applicable; and (ii) (A)
certified copies of Company's, and each Guarantor's certificate of incorporation
and bylaws or other constitutional documents certified as true and complete as
of a recent date by the appropriate official of the jurisdiction of
incorporation of Company and each Guarantor; and (B) a certificate of good
standing from the state or other jurisdictions of Company's and each Guarantor's
incorporation, and from every state or other jurisdiction in which Company and
each Guarantor is qualified to do business.

         6.3 Collateral Documents. As security for all Indebtedness of Company
to the Banks hereunder, Company shall have furnished, executed and delivered to
Agent, or caused to be furnished, executed and delivered to Agent, prior to or
simultaneously with the initial borrowing hereunder, in form to be satisfactory
to Agent and the Banks and supported by appropriate resolution in certified form
authorizing same, the following:

         (a)      The Mortgages;

         (b)      The Security Agreements;

         (c)      The Guaranty;

<PAGE>   53

         (d)      The Pledge Agreements;

         (e)      Financing Statements required or requested by Agent and the
                  Banks to perfect all security interests to be conferred upon
                  Agent and the Banks under this Agreement and to accord Agent
                  and the Banks a perfected first priority security position
                  under the Uniform Commercial Code (subject only to the
                  encumbrances permitted hereunder); and

         (f)      Such other documents or agreements of security and appropriate
                  assurances of validity and perfected first priority of lien or
                  security interest as Agent and the Banks may request at any
                  time.

         6.4 Licenses, Permits, Etc. The Agent shall have received, with a
counterpart for each Bank, copies of each authorization, license, permit,
consent, order or approval of, or registration, declaration or filing with, any
governmental authority or any securities exchange or other person (including
without limitation any securities holder) obtained or made by the Company, any
of its Subsidiaries, or any other Person (as of the relevant date of Advance or
loan hereunder) in connection with the transactions contemplated by this
Agreement or the Loan Documents.

         6.5 Representations and Warranties. The representations and warranties
made by Company or any other party to any of the Loan Documents (excluding the
Agent and Banks) under this Agreement or any of the Loan Documents, and the
representations and warranties of any of the foregoing which are contained in
any certificate, document or financial or other statement furnished at any time
hereunder or thereunder or in connection herewith or therewith shall have been
true and correct in all material respects when made and shall be true and
correct in all material respects on and as of the date of the making of any
Advance hereunder.

         6.6 Compliance with Certain Documents and Agreements. The Company shall
have performed and complied with all agreements and conditions contained in this
Agreement, the Loan Documents, or any agreement or other document executed
thereunder and required to be performed or complied with by Company (as of the
applicable date) and Company shall not be in default in the performance or
compliance with any of the terms or provisions hereof or thereof.

         6.7 Opinion of Counsel. Company shall furnish Agent with signed copies
for each Bank, with an opinion of counsel to the Company and the Guarantors,
dated the date hereof, and covering such matters as required by and otherwise
satisfactory in form and substance to the Agent and each of the Banks.

         6.8 No Default. No Default or Event of Default shall have occurred and
be continuing, and since December 31, 1998 there shall have been no material
adverse change in the financial condition, properties, business, prospects of,
results or operations of the Company and its Subsidiaries.

<PAGE>   54

         6.9  Transaction Documents. (i) The Agent shall have received executed
copies of the Transaction Documents certified by a Responsible Officer of the
Company. The Transaction Documents shall be in form and substance reasonably
satisfactory to the Agent and each of the Transaction Documents shall have been
duly authorized, executed and delivered by each of the parties thereto and shall
be in full force and effect. No term or provision of the Transaction Documents
shall have been modified, and no condition to consummation of the transaction
shall have been waived, in either case in a manner materially detrimental to
Company, by any of the parties thereto. The Company shall have in all material
respects done and performed such acts and observed such covenants which it is
required to do or perform under the Transaction Documents and in order to
consummate the Transaction on or prior to the Effective Date.

         (ii) The Company shall have provided evidence satisfactory to the Agent
that the Transaction has been consummated.

         6.10 Insurance. The Agent shall have received evidence satisfactory to
it that the Company has obtained the insurance policies required by Section 8.13
hereof and that such insurance policies are in full force and effect.

         6.11 Pro Forma Balance Sheet and Projections. The Company shall have
delivered to the Agent (a) a pro forma consolidated balance sheet of Company and
its Subsidiaries (the "Pro Forma Balance Sheet") certified by the chief
financial officer of Company that it fairly presents the pro forma adjustments
reflecting the consummation of the Transaction and the transactions contemplated
in this Agreement, including all material fees and expenses in connection
therewith.

         6.12 [Intentionally Left Blank].

         6.13 Real Estate Documentation. Prior to or simultaneously with the
delivery of any Mortgage (except the existing mortgage from KDI/Triangle
Corporation), Company shall furnish Agent, in form and substance satisfactory to
Agent and the Bank, the following:

         (a)      An appraisal of the real property which is subject to such
                  Mortgage prepared by an MAI appraiser, which appraisal and
                  appraiser shall be satisfactory to Agent and the Banks. Such
                  appraisal shall be conducted at Company's expense;

         (b)      An environmental audit or risk assessment conducted with
                  respect to such real property by an engineer or a company
                  experienced in such matters (and acceptable to Bank), which
                  determines that no hazardous materials have been generated,
                  stored, buried or disposed of, on, under or in a location
                  which will adversely affect or create any violations of or
                  subject such real property to the provisions of any
                  environmental regulatory statute. The audit shall be of a
                  scope necessary to address all concerns of Banks and may, at
                  Banks' option, require soil, air or water testing, leak
                  testing of underground storage tanks or other

<PAGE>   55

                  requirements warranted by the circumstances as determined by
                  Banks. Such audit shall be conducted at Company's expense;

         (c)      A mortgage survey with respect to such real property prepared
                  at Company's expense certified to Agent and to a title
                  insurance company acceptable to Agent ("Title Company") from a
                  registered land surveyor reasonably satisfactory to Agent
                  which complies with ALTA/ACSM minimum detail requirements and
                  which shows nothing objectionable to Agent;

         (d)      A policy of mortgage title insurance at Company's expense in
                  standard A.L.T.A. loan policy form issued by the Title Company
                  satisfactory to Agent without standard exceptions in an amount
                  equal to the lesser of (i) the appraised value of such real
                  property and (ii) the Indebtedness, insuring that such
                  mortgage is a first lien on such real property, that the title
                  to such real property is in the applicable mortgagor and that
                  there are no other liens, claims or encumbrances thereon
                  except for the Permitted Encumbrances. The title policy shall
                  also contain a zoning endorsement, comprehensive endorsement
                  and such other endorsements as required by Agent; and

         (e)      Such other information and documentation as any Bank may
                  reasonably request.

         6.14 Company's Certificate. The Agent shall have received, with a
signed counterpart for each Bank, a certificate of a responsible senior officer
of Company dated the date of the making of Advances hereunder, stating that to
the best of his or her knowledge after due inquiry, the conditions of Sections
6.1, 6.5, 6.6, 6.8, 6.9 and 6.11 hereof have been fully satisfied.

         6.15 Payment of Fees. Company shall have paid to the Agent all fees,
costs and expenses required hereunder to be paid to Agent upon execution of this
Agreement.

         6.16 Other Documents and Instruments. The Agent shall have received,
with a photocopy for each Bank, such other instruments and documents as each of
the Banks may reasonably request in connection with the making of loans
hereunder, and all such instruments and documents shall be satisfactory in form
and substance to the Banks.

         6.17 Continuing Conditions. The obligations of the Banks to make
Advances (including the initial Advance) and advances of the Term Loan under
this Agreement and the obligation of the Issuing Bank to issue any Letters of
Credit shall be subject to the continuing conditions that:

         (a) No Default or Event of Default shall exist as of the date of the
Advance or the request for the Letter of Credit; and

         (b) Each of the representations and warranties contained in this
Agreement and in

<PAGE>   56

each of the other Loan Documents shall be true and correct in all material
respects as of the date of the Advance or Letter of Credit.

     7.   REPRESENTATIONS AND WARRANTIES

     Company represents and warrants and such representations and warranties
shall be deemed to be continuing representations and warranties until the later
to occur of the Revolving Credit Maturity Date and the Term Loan Maturity Date
and thereafter until final payment in full of the Indebtedness, expiration of
all Letters of Credit and performance by Company of all other obligations under
this Agreement and the other Loan Documents:

     7.1  Due Authorization--Company. Company and each of its Subsidiaries is a
corporation duly organized and existing in good standing under the laws of the
jurisdiction of its incorporation; Company and each of its Subsidiaries is in
good standing in each jurisdiction in which it is required to be qualified to do
business except where the failure to qualify would not have a Material Adverse
Effect; execution, delivery and performance of this Agreement and other
documents and instruments required under this Agreement, and the issuance of the
Notes by Company are within its corporate powers, have been duly authorized, are
not in contravention of law or the terms of Company's Articles of Incorporation
or Bylaws, and do not require the consent or approval of any governmental body,
agency or authority; and this Agreement and other documents and instruments
required under this Agreement and Notes, when issued and delivered, will be
valid and binding on the Company in accordance with their terms, except to the
extent enforcement may be affected by bankruptcy or other laws affecting
creditors rights of general applicability and general principles of equity.

     7.2  Due Authorization--Guarantors. Execution, delivery and performance of
the documents executed and delivered by the Guarantors in connection with this
Agreement are within their corporate powers, have been duly authorized by the
Guarantors, are not in contravention of law or the Articles of Incorporation or
Bylaws of the Guarantors or any unwaived terms of any indenture, agreement or
undertaking to which any Guarantor is a party or by which it is bound, do not
require the consent or approval of any governmental body, agency or authority,
and when issued and delivered, will be valid and binding on the Guarantors in
accordance with their terms.

     7.3  Non-Contravention. The execution, delivery and performance of this
Agreement and any other documents and instruments required under this Agreement,
and the issuance of the Notes by Company are not in contravention of the
unwaived terms of any indenture, agreement or undertaking to which Company is a
party or by which it is bound.

     7.4  No Litigation. Except as set forth in Schedule 7.4 annexed hereto, no
litigation or other proceeding before any court or administrative agency is
pending, or to the knowledge of the officers of Company is threatened against
Company or any Subsidiary, the outcome of which would reasonably be expected to
have a Material Adverse Effect.

<PAGE>   57

     7.5  Encumbrances. There are no Liens on any of Company's or any
Subsidiary's assets, except Permitted Encumbrances and except as described in
Schedule 7.5.

     7.6  ERISA. Neither Company nor any Subsidiary maintains or contributes to
any employee pension benefit plan subject to title IV of the "Employee
Retirement Income Security Act of 1974" (herein called "ERISA"), except the
KDI/Triangle Corporation Defined Benefit Plan (the "Pension Plan"). The unfunded
past service liability of the Pension Plan was $538,475 as of January 1, 1998,
and there is no accumulated funding deficiency within the meaning of ERISA, or
any existing material liability with respect to any pension plan owed to the
Pension Benefit Guaranty Corporation ("PBGC") or any successor thereto, except
any funding deficiency for which an application to the PBGC for waiver is
pending or for which a waiver has been granted by the PBGC.

     7.7  Financial Statements. The financial statements of the Company and
Guarantors dated March 31, 1999, previously furnished Agent and the Banks,
fairly present in all material respects the financial condition of the Company
and Guarantors as of such date; since said date there has been no material
adverse change in the financial condition of Company and the Guarantors (taken
as a whole); to the best of the knowledge of Company's officers, except with
respect to the Transaction, neither Company nor any Guarantor has any material
contingent obligations (including any liability for taxes) not disclosed by or
reserved against in said balance sheet, and at the present time there are no
material unrealized or anticipated losses from any present commitment of Company
or any Guarantor.

     7.8  Financial Projections. The financial projections previously furnished
by Company to Agent and the Banks, the receipt of which Agent and the Banks
acknowledge, were as of the date thereof and are as of the date of execution of
this Agreement, based upon the good faith belief of the management of Company,
reasonable in all material respects taking into account all facts and
information known to or reasonably available to Company.

     7.9  Tax Returns. All tax returns and tax reports of Company and each
Subsidiary required by law to have been filed have been duly filed or extensions
obtained, and all taxes, assessments and other governmental charges or levies
(other than those presently payable without penalty and those currently being
contested in good faith for which adequate reserves have been established) upon
Company or any Subsidiary (or any of its properties) which are due and payable
have been paid for which the failure to pay would materially adversely affect
its business or the value of its property or assets (taken as a whole). The
charges, accruals and reserves on the books of Company and its Subsidiaries in
respect of the Federal income tax for all periods are adequate in the opinion of
Company.

     7.10 Subsidiaries. There are no Subsidiaries of Company, except the
Subsidiaries identified on Schedule 7.10.

<PAGE>   58

     7.11 Compliance with Laws. Except as set forth in Schedule 7.11:

          (a) Company and its Subsidiaries are, in the conduct of their
business, in compliance in all material respects with all federal, state or
local laws, statutes, ordinances and regulations applicable to any of them, the
enforcement of which, if Company or any Subsidiary were not in compliance, would
reasonably be expected to materially adversely affect its business or the value
of its property or assets (taken as a whole). Company and its Subsidiaries have
all approvals, authorizations, consents, licenses, orders and other permits of
all governmental agencies and authorities, whether federal, state or local,
required to permit the operation of their business as presently conducted,
except such approvals, authorizations, consents, licenses, orders and other
permits with respect to which the failure to have would reasonably be expected
to have a Material Adverse Effect.

          (b) Neither Company nor any Subsidiary is a party to any litigation or
administrative proceeding, nor so far as is known by Company is any litigation
or administrative proceeding threatened against Company or any Subsidiary, the
outcome of which would reasonably be expected to have a material adverse effect
on the Company and the Subsidiaries (taken as a whole) which in either case (i)
asserts or alleges that Company or any Subsidiary violated Hazardous Material
Laws, (ii) asserts or alleges that Company or any Subsidiary is required to
clean up, remove, or take remedial or other response action due to the disposal,
depositing, discharge, leaking or other release of any hazardous substances or
materials, (iii) asserts or alleges that Company or any Subsidiary is required
to pay all or a portion of the cost of any past, present, or future cleanup,
removal or remedial or other response action which arises out of or is related
to the disposal, depositing, discharge, leaking or other release of any
hazardous substances or materials by Company or any Subsidiary.

          (c) Neither Company nor any Subsidiary is subject to any judgment,
decree, order or citation related to or arising out of applicable Hazardous
Material Laws which would reasonably be expected to materially adversely affect
its business or the value of its property or assets (taken as a whole) and to
the best knowledge of the Company, neither Company nor any Subsidiary has been
named or listed as a potentially responsible party by any governmental body or
agency in a matter arising under any applicable Hazardous Material Laws which
would reasonably be expected to have a Material Adverse Effect.

          (d) To the best of Company's knowledge, Company and its Subsidiaries
have all permits, licenses and approvals required under applicable Hazardous
Material Laws, the failure of which to have would have a Material Adverse Effect

     7.12 No Defaults. There exists no material default under the provisions of
any instrument evidencing any indebtedness for borrowed money of Company or any
Guarantor which is permitted hereunder or of any agreement relating thereto.

     7.13 Consents, Approvals and Filings, Etc. Except as have been previously
obtained

<PAGE>   59

and except for such filings to be made concurrently herewith as are required by
the Loan Documents to perfect liens in favor of the Agent, no authorization,
consent, approval, license, qualification or formal exemption from, nor any
filing, declaration or registration with, any court, governmental agency or
regulatory authority or any securities exchange or any other person or party
(whether or not governmental) is required in connection with the execution,
delivery and performance: (i) by Company of this Agreement, any of the other
Loan Documents to which it is a party, or any other documents or instruments to
be executed and or delivered by Company in connection therewith or herewith;
(ii) by any Guarantor, of any of the other Loan Documents to which such
Subsidiary is a party, or (iii) by Company or any of the Guarantors, of the
Liens granted, conveyed or otherwise established (or to be granted, conveyed or
otherwise established) by or under this Agreement or the other Loan Documents.
All such authorizations, consents, approvals, licenses, qualifications,
exemptions, filings, declarations and registrations which have previously been
obtained or made, as the case may be, are in full force and effect and are not
the subject of any attack, or to the knowledge of Company threatened attack (in
any material respect) by appeal or direct proceeding or otherwise.

     7.14 Agreements Affecting Financial Condition. Neither Company, nor any
Guarantor nor any Subsidiary is party to any agreement or instrument or subject
to any charter or other corporate restriction which has a Material Adverse
Effect.

     7.15 Labor Relations. Neither the Company nor any Subsidiary is engaged in
any unfair labor practice that could reasonably be expected to have a Material
Adverse Effect. There is (i) no unfair labor practice complaint pending against
the Company or any Subsidiary or to the knowledge of Company, threatened against
any of them, before the National Labor Relations Board, and no grievance or
arbitration proceeding arising out of or under any collective bargaining
agreement is so pending against Company or, to the knowledge of Company,
threatened against any of it, (ii) no strike, labor dispute, slowdown or
stoppage pending against the Company or any Subsidiary or to the knowledge of
Company, threatened against any of them and (iii) no union representation
question existing with respect to the employees of Company or any Subsidiary.

     7.16 Existing Debt. Schedule 7.16 hereto sets forth a true and complete
list of all Debt for borrowed money (other than Indebtedness) of Company and its
Subsidiaries as of the date hereof that is in excess of $25,000 for any one
issue and is to remain outstanding after giving effect to this transaction, in
each case showing the aggregate principal amount thereof and the name of the
respective borrower (or issuer) and any other entity which directly or
indirectly guaranteed such debt.

     7.17 Solvency. After giving effect to the consummation of the transactions
contemplated by this Agreement, Company and its Subsidiaries will each be
solvent, able to pay its indebtedness as it matures and will have capital
sufficient to carry on its business and all business in which it is about to
engage. This Agreement is being executed and delivered by the Company to Agent
and the Banks in good faith and in exchange for fair, equivalent

<PAGE>   60

consideration. Neither Company nor any Subsidiary is insolvent, nor will Company
or any Subsidiary be rendered insolvent by its execution and delivery to Agent
and the Banks of this Agreement or by the consummation of the transactions
contemplated by this Agreement, and the capital and monies remaining in the
Company and its Subsidiaries are not now and will not become so unreasonably
small as to preclude the Company or its Subsidiaries from carrying on their
businesses. Neither the Company nor any Subsidiary intends to nor does
management of Company or any Subsidiary believe it will incur debts beyond its
ability to pay as they mature. Neither Company nor any Subsidiary contemplates
filing a petition in bankruptcy or for an arrangement or reorganization under
the Bankruptcy Code, nor does Company or any Subsidiary have any knowledge of
any threatened bankruptcy or insolvency proceedings against Company or any
Subsidiary.

     7.18 Capitalization. The authorized capital stock of Company and each
Guarantor is as set forth in Schedule 7.18. All issued and outstanding shares of
capital stock of Company are duly authorized and validly issued, fully paid,
nonassessable, free and clear of all Liens (except for Liens in favor of Agent)
and such Equity Interests were issued in compliance with all applicable state
and federal laws concerning the issuance of securities. The capital stock of
Company and each Guarantor is owned by the stockholders and in the amounts set
forth on Schedule 7.18. No shares of the capital stock of Company or any
Guarantor, other than those described above, are issued and outstanding. Except
as described in Schedule 7.18, there are no preemptive or other outstanding
rights, options, warrants, conversion rights or similar agreements or
understandings for the purchase or acquisition from Company or any Guarantor, of
any shares of capital stock or other securities of Company or any Guarantor.

     7.19 Year 2000 Requirement. Except as described on Schedule 7.19, Company
and its Subsidiaries have reviewed the areas in their business and operations
which could be adversely affected by, and have developed or are developing a
program to address on a timely basis the risk that computer applications used by
the Company and its Subsidiaries may be unable to recognize and perform properly
date-sensitive functions involving certain dates prior to and any date after
December 31, 1999. Except as described on Schedule 7.19, any reprogramming
required to permit the proper functioning, in and following the year 2000, of
(i) any Company's and its Subsidiaries' computer systems and (ii) equipment
containing embedded microchips (including systems and equipment supplied by
others or with which such Company and its Subsidiaries systems interface) and
the testing of all such systems and equipment, as so reprogrammed, will be
substantially completed by September 30, 1999. The cost to the Company and its
Subsidiaries of such reprogramming and testing and of the reasonably foreseeable
consequences of year 2000 to the Company and its Subsidiaries (including,
without limitation, reprogramming errors and the failure of others' systems or
equipment) will not result in a Default or a Material Adverse Effect. Except for
such of the reprogramming referred to in the preceding sentence as may be
necessary, the computer and management information systems of the Company and
its Subsidiaries are and, with ordinary course upgrading and maintenance, will
continue for the term of this Agreement to be, sufficient to permit the Company
and its Subsidiaries to conduct their business without Material Adverse Effect.

<PAGE>   61

     7.20 No Investment Company or Margin Stock. Neither Company nor any of its
Subsidiaries is an "investment company" within the meaning of the Investment
Company Act of 1940, as amended. Neither Company nor any of its Subsidiaries is
engaged principally, or as one of its important activities, directly or
indirectly, in the business of extending credit for the purpose of purchasing or
carrying margin stock, and none of the proceeds of any of the loans hereunder
will be used, directly or indirectly, for any purpose which would violate the
provisions of Regulation U or X of the Board of Governors of the Federal Reserve
System. Terms for which meanings are provided in Regulation U of the Board of
Governors of the Federal Reserve System or any regulations substituted therefor,
as from time to time in effect, are used in this paragraph with such meanings.

     7.21 Good Title--Company. Company has good and valid title to the property
pledged, mortgaged or otherwise encumbered or to be encumbered by it under the
Security Agreements and Mortgages to which Company is a party.

     7.22 Good Title--Guarantors. Each Guarantor has good and valid title to the
property pledged, mortgaged or otherwise encumbered or to be encumbered by it
under the Security Agreements and Mortgages to which it is a party.

     8.  AFFIRMATIVE COVENANTS

     Company covenants and agrees that it will, and, as applicable, it will
cause each of its Subsidiaries, until the later of the Revolving Credit Maturity
Date and the Term Loan Maturity Date and thereafter until expiration of all
Letters of Credit and final payment in full of the Indebtedness and the
performance by Company of all other obligations under this Agreement and the
other Loan Documents:

     8.1  Financial Statements. Furnish to the Agent and each Bank:

          (a) as soon as available, but in any event within ninety (90) days
     after the end of each fiscal year of Company a copy of the audited
     Consolidated and unaudited Consolidating financial statements of Company as
     at the end of such year and the related audited statements of income,
     accumulated earnings, and cash flows for such year, setting forth in each
     case in comparative form the figures for the previous year, certified as
     being fairly stated in all material respects by one of the "Big Five"
     certified public accounting firms or by another nationally recognized
     certified public accountant reasonably satisfactory to the Agent and the
     Banks;

          (b) as soon as available, but in any event not later than thirty (30)
     days after the end of each month, the unaudited Consolidated and
     Consolidating financial statements of Company as at the end of such month
     and the related unaudited statements of income, accumulated earnings and
     cash flows of Company for the portion of the fiscal

<PAGE>   62

     year through the end of such month, setting forth in each case in
     comparative form the figures for the previous year, and certified by a
     Responsible Officer as being fairly stated in all material respects; and

all such financial statements to be complete and correct in all material
respects and to be prepared in reasonable detail and in accordance with GAAP
throughout the periods reflected therein and with prior periods (except as
approved by such officer and disclosed therein), provided however that the
financial statements delivered pursuant to clause (b) hereof will not be
required to include footnotes and will be subject to year-end adjustments.

     8.2  Certificates; Other Information. Furnish to the Agent and each Bank:

          (a) Within sixty (60) days after and as the end of each fiscal
     quarter, a Covenant Compliance Certificate substantially in form attached
     hereto as Exhibit K;

          (b) Within twenty five (25) days after and as the end of each month,
     an aging of accounts receivable, an accounts payable report and a detailed
     inventory listing which reconciles to the general ledger (in form
     reasonably satisfactory to the Agent and the Banks);

          (c) Together with the financial statements delivered pursuant to
     Section 8.1(b) for January of each year, annual projections for the Company
     and its Subsidiaries in form reasonably acceptable to the Agent and the
     Banks;

          (d) Within twenty five (25) days after and as of the end of each
     month, a Borrowing Base Certificate on a consolidated basis for all
     Borrowing Base Obligors substantially in the form attached hereto as
     Exhibit M;

          (e) Promptly and in form to be reasonably satisfactory to Majority
     Banks, such additional financial and/or other information, or other reports
     as any Bank may from time to time reasonably request.

     8.3  Payment of Obligations. Pay, discharge or otherwise satisfy at or
before maturity or before they become delinquent, as the case may be, all of its
material obligations of whatever nature, except where the amount or validity
thereof is currently being contested in good faith by appropriate proceedings
and reserves in conformity with GAAP with respect thereto have been provided on
the books of the Company.

     8.4  Conduct of Business and Maintenance of Existence.

          (a) Preserve, renew and keep in full force and effect its existence.

          (b) Take all reasonable action to maintain all rights, privileges and
     franchises

<PAGE>   63

     necessary or desirable in the normal conduct of its business.

     8.5  Inspection of Property; Books and Records, Discussions.

     Permit Agent and each Bank, through their authorized attorneys, accountants
and representatives (a) to examine Company's and each Subsidiary's books,
accounts, records, ledgers and assets and properties of every kind and
description wherever located at all reasonable times during normal business
hours, but in no event less frequently than annually, upon oral or written
request of Agent or such Bank; (b) at any time and from time to time, at the
request of the Majority Banks, to conduct full or partial collateral audits of
Company and its Subsidiaries, with all reasonable costs and expenses of such
audits to be at the Banks' expense, provided that following the occurrence and
during the continuance of an Event of Default, audits shall be at the Company's
cost and expense; and (c) permit Agent and each Bank or their authorized
representatives, at reasonable times and intervals, to visit all of their
respective offices, discuss their respective financial matters with their
respective officers and independent certified public accountants, and, by this
provision, Company authorizes such accountants to discuss the finances and
affairs of Company and its Subsidiaries (provided that Company is given an
opportunity to participate in such discussions) and examine any of its or their
books and other corporate records. Notwithstanding the foregoing, all
information furnished to the Agent or the Banks hereunder shall be subject to
the undertaking of the Banks set forth in Section 14.13 hereof.

     8.6  Notices. Promptly give notice to the Agent of:

          (a) the occurrence of any Default or Event of Default of which Company
     or any Subsidiary has knowledge;

          (b) any (i) default or event of default under any Contractual
     Obligation of Company or any Subsidiary or (ii) litigation, investigation
     or proceeding which may exist at any time between Company or any Subsidiary
     and any governmental authority or any other third party, which in the case
     of either (i) or (ii), if not cured or if it is reasonably likely to be
     adversely determined, as the case may be, would have a Material Adverse
     Effect;

          (c) the following events, as soon as possible and in any event within
     thirty (30) days after the Company knows thereof and to the extent the same
     would have a Material Adverse Effect: (i) the occurrence of any "reportable
     event" as defined in ERISA with respect to any Pension Plan, or any
     withdrawal from or the termination, reorganization or insolvency of any
     Multiemployer Plan or (ii) the institution of proceedings or the taking of
     any other action by the Pension Benefit Guaranty Corporation or Borrowers
     or any Commonly Controlled Entity or any Multiemployer Plan with respect to
     the withdrawal from or the terminating, reorganization or insolvency of any
     Pension Plan;

<PAGE>   64

          (d) any event which is reasonably likely to have a Material Adverse
     Effect;

          (e) promptly after becoming aware of the taking by the Internal
     Revenue Service or any foreign taxing jurisdiction of a written tax
     position which could reasonably be expected to have a material adverse
     effect on the business or financial condition of Company and its
     Subsidiaries (taken as a whole) (or any such tax position taken by the
     Company) setting forth the details of such position and the financial
     impact thereof; and

          (f) not less than ten (10) days prior to the proposed effective date
     thereof, copies of any proposed material amendments, restatements or other
     modification to the Transaction Documents.

Each notice pursuant to this Section shall be accompanied by a statement of a
Responsible Officer setting forth details of the occurrence referred to therein
and stating what action the Company proposes to take with respect thereto.

     8.7  Governmental and Other Approvals. Apply for, obtain and/or maintain in
effect, as applicable, all authorizations, consents, approvals, licenses,
qualifications, exemptions, filings, declarations and registrations (whether
with any court, governmental agency, regulatory authority, securities exchange
or otherwise) which are necessary in connection with the execution, delivery and
performance: (i) by Company, of this Agreement, the other Loan Documents, or any
other documents or instruments to be executed and/or delivered by Company in
connection therewith or herewith; and (ii) by each of the Subsidiaries, of the
Loan Documents to which it is a party.

     8.8  Security. Take such actions as the Agent or the Majority Banks may
from time to time reasonably request to establish and maintain first perfected
security interests in and Liens on all of its Collateral, subject only to
Permitted Encumbrances and other liens permitted under Section 9.7 hereof.

     8.9  Defense of Collateral. Defend the Collateral from any Liens other than
Permitted Encumbrances and other Liens permitted by Section 9.7.

     8.10 Bank Accounts. Maintain all of its principal bank accounts with Agent,
except for any bank accounts of Densitron Microwave Limited and/or DML Microwave
Limited.

     8.11 Further Assurances. Execute and deliver or cause to be executed and
delivered to Agent within a reasonable time following Agent's request, and at
the Company's expense, such other documents or instruments as Agent may
reasonably require to effectuate more fully the purposes of this Agreement or
the other Loan Documents.

     8.12 Taxes. Pay and discharge, and cause each of its Subsidiaries to pay
and discharge, all taxes and other governmental charges, and all contractual
obligations calling for the payment

<PAGE>   65

of money, before the same shall become overdue, unless and to the extent only
that such payment is being contested in good faith.

     8.13 Insurance. Maintain, and cause each of its Subsidiaries to maintain,
insurance coverage on their physical assets and against other business risks in
such amounts and of such types as are customarily carried by companies similar
in size and nature, and in the event of acquisition of additional property, real
or personal, or of incurrence of additional risks of any nature, increase such
insurance coverage in such manner and to such extent as prudent business
judgment and present practice would dictate; and in the case of all policies
covering property mortgaged or pledged to Agent or the Banks or property in
which Agent or the Banks shall have a security interest of any kind whatsoever,
other than those policies protecting against casualty liabilities to strangers,
all such insurance policies shall provide that the loss payable thereunder shall
be payable to Company (or a Subsidiary, as applicable) and Agent for the benefit
of the Banks (as mortgagee) as their respective interests may appear, upon
request of Agent or any Bank, certificates evidencing said policies, including
all endorsements thereon and those required hereunder, shall be delivered to
Agent or such Lender, as the case may be.

     8.14 Compliance with ERISA. Comply, and cause each of its Subsidiaries to
comply, with all material requirements imposed by ERISA as presently in effect
or hereafter promulgated, including but not limited to, the minimum funding
requirements of any Pension Plan.

     8.15 ERISA Notices. Promptly notify Agent after the occurrence thereof in
writing of any of the following events:

     (a)  the termination of a Pension Plan pursuant to Subtitle C of Title IV
          of ERISA or otherwise;

     (b)  the appointment of a trustee by a United States District Court to
          administer a Pension Plan;

     (c)  the commencement by the Pension Benefit Guaranty Corporation, or any
          successor thereto of any proceeding to terminate a Pension Plan;

     (d)  the failure of a Pension Plan to satisfy the minimum funding
          requirements for any plan year as established in Section 412 of the
          Internal Revenue Code of 1954, as amended or any similar provision
          under the Internal Revenue Code of 1986, as amended;

     (e)  the withdrawal of Company or any Subsidiary from a Pension Plan; or

     (f)  a reportable event, within the meaning of Title IV of ERISA.

     8.16 Maintain Consolidated Adjusted Net Worth. Maintain as of the end of
each fiscal

<PAGE>   66

quarter a Consolidated Adjusted Net Worth of not less than the following amounts
during the periods specified below:

<TABLE>
<S>                                                                                                 <C>
     from the Effective Date through December 30, 1999..............................................$20,000,000
     from December 31, 1999 through December 30, 2000...............................................$20,000,000
     from December 31, 2000 through December 30, 2001...............................................$21,000,000
     from December 31, 2001 through December 30, 2002...............................................$23,000,000
     from December 31, 2002 through December 30, 2003...............................................$26,000,000
     from December 31, 2003 and thereafter..........................................................$29,500,000
</TABLE>

     8.17 Maintain Total Debt to EBITDA Ratio. Maintain as of the end of each
fiscal quarter a Total Debt to EBITDA Ratio of not more than the following
amounts during the periods specified below:

<TABLE>
<S>                                                                                                 <C>
     from the Effective Date through December 30, 1999...............................................4.0 to 1.0
     from December 31, 1999 through December 30, 2000................................................4.0 to 1.0
     from December 31, 2000 through December 30, 2001...............................................3.75 to 1.0
     from December 31, 2001 through December 30, 2002................................................3.5 to 1.0
     from December 31, 2002 through December 30, 2003................................................3.5 to 1.0
     from December 31, 2003 and thereafter...........................................................3.5 to 1.0
</TABLE>

     8.18 Maintain Fixed Charge Coverage Ratio. Maintain as of the end of each
fiscal quarter of Company a Fixed Charge Coverage Ratio of not less than the
following amounts during the periods specified below:

<TABLE>
<S>                                                                                                 <C>
     from the Effective Date through December 30, 1999..............................................1.05 to 1.0
     from December 31, 1999 through December 30, 2000...............................................1.05 to 1.0
     from December 31, 2000 through December 30, 2001...............................................1.05 to 1.0
     from December 31, 2001 through December 30, 2002...............................................1.05 to 1.0
     from December 31, 2002 through December 30, 2003...............................................1.10 to 1.0
     from December 31, 2003 and thereafter..........................................................1.15 to 1.0
</TABLE>

     8.19 Maintain Senior Debt to EBITDA Ratio. Maintain as of the end of each
fiscal quarter a Senior Debt to EBITDA Ratio of not more than the following
during the periods specified below:

<TABLE>
<S>                                                                                                 <C>
     from the Effective Date through December 30, 1999..............................................3.25 to 1.0
     from December 31, 1999 through December 30, 2000...............................................3.25 to 1.0
     from December 31, 2000 through December 30, 2001................................................3.0 to 1.0
     from December 31, 2001 through December 30, 2002...............................................2.75 to 1.0
     from December 31, 2002 through December 30, 2003...............................................2.75 to 1.0
     from December 31, 2003 and thereafter..........................................................2.75 to 1.0
</TABLE>

<PAGE>   67

     8.20 Environmental Compliance.

          (a) Company shall comply, and cause its Subsidiaries to comply, with
all applicable Hazardous Material Laws except for such non-compliance which
would reasonably not be expected to materially adversely affect its business or
the value of its property or assets (taken as a whole).

          (b) Company shall provide to Agent, promptly upon receipt, copies of
any correspondence, notice, pleading, citation, indictment, complaint, order,
decree, or other document from any source asserting or alleging a circumstance
or condition which requires or may require a financial contribution by Company
or any Subsidiary to a cleanup, removal, remedial action, or other response by
or on the part of Company or any Subsidiary under applicable Hazardous Material
Laws or which seeks damages or civil, criminal or punitive penalties from
Company or any Subsidiary for an alleged violation of Hazardous Material Laws,
where such contribution, response or damages would reasonably be expected to
materially adversely affect its business or the value of its property or assets
(taken as a whole).

          (c) Company shall promptly notify Agent in writing as soon as Company
becomes aware of the occurrence or existence of any condition or circumstance
which makes the environmental warranties contained in this Agreement incomplete
or inaccurate in any material respect as of any date.

          (d) In the event of any condition or circumstance that makes any
environmental warranty, representation and/or agreement incomplete or inaccurate
in any material respect as of any date, Company shall, at the reasonable request
of Agent, at its sole expense, retain an environmental consultant, reasonably
acceptable to Agent and the Banks, to conduct an appropriate investigation
regarding the changed condition and/or circumstance and notify Agent of such
investigation which notice shall describe the purpose and intended scope of the
environmental audit. A copy of the environmental consultant's report will be
promptly delivered to Agent, and Company upon completion.

          (e) [Intentionally Left Blank].

          (f) Company hereby indemnifies, saves and holds Agent and each of the
Banks and any of their respective past, present and future officers, directors,
shareholders, employees, representatives and consultants harmless from any and
all loss, damages, suits, penalties, costs, liabilities and expenses (including
but not limited to reasonable investigation, environmental audit(s), and legal
expenses) arising out of any claim, loss or damage of any property, injuries to
or death of persons, contamination of or adverse affects on the environment, or
any violation of any applicable Hazardous Material Laws, caused by or in any way
related to any property owned or operated by Company or any Subsidiary, or due
to any acts of Company or any Subsidiary or such person's, officers, directors,
shareholders, employees, consultants and/or representatives; provided, however,
that the foregoing indemnification shall not be

<PAGE>   68

applicable when arising from events or conditions occurring while Agent is in
sole possession (subject to the rights of any creditors of Company) of such
property. In no event shall Company be liable hereunder for any loss, damages,
suits, penalties, costs, liabilities or expenses arising from any act of gross
negligence of Agent or any of the Banks, or any such Person's agents or
employees.

     It is expressly understood and agreed that the indemnifications granted
herein are intended to protect Agent and each of the Banks, their respective
past, present and future officers, directors, shareholders, employees,
consultants and representatives from any claims that may arise by reason of the
Liens granted to Agent and each of the Banks, or under any other document or
agreement given to secure repayment of any indebtedness from Company, whether or
not such claims arise before or after Agent has foreclosed upon and/or otherwise
become the owner of any such property. All obligations of indemnity as provided
hereunder shall be secured by the Collateral Documents until payment in full of
all indebtedness of Company to the Banks, unless there is a then known violation
of the Hazardous Material Laws and Agent or any of the Banks has asserted in
writing a claim for indemnification from Company, in which event the same shall
continue until the violation is remediated.

     It is expressly agreed and understood that the provisions hereof shall and
are intended to be continuing and shall survive the repayment of the
Indebtedness.

          (g) Company and its Subsidiaries shall maintain all permits, licenses
and approvals required under applicable Hazardous Material Laws except such
permits, licenses and approvals the failure of which to have would reasonably
not be expected to materially adversely affect its business or the value of its
property or assets (taken as a whole).

     8.21 Subsidiaries; Guaranty. With respect to each Person which becomes a
Material Subsidiary subsequent to the date of this Agreement, within thirty days
of the date a new Material Subsidiary is created or acquired, as the case may
be, cause each such Subsidiary to execute and deliver to Agent, for and on
behalf of each of the Banks, (i) a joinder agreement in the form attached as
Exhibit "A" to the Guaranties whereby each such Subsidiary becomes obligated as
a Guarantor under the Guaranty and (ii) Security Agreements and Mortgages, as
applicable, together with such supporting documentation, including without
limitation corporate authority, items, certificates and opinions of counsel, as
reasonably required by Agent and the Majority Banks.

     9.   NEGATIVE COVENANTS

     Company covenants and agrees that, until the later to occur of the
Revolving Credit Maturity Date and the Term Loan Maturity Date and thereafter
until expiration of all Letters of Credit and final payment in full of the
Indebtedness and the performance by Company of all other obligations under this
Agreement and the other Loan Documents, it will not, and will not permit its
Subsidiaries to, without the prior written consent of the Majority Banks:

<PAGE>   69

     9.1  Capital Structure and Redemptions. Purchase, acquire, issue or redeem
any of its capital stock or make any material change in its capital structure,
except for redemptions of stock if at the time of such redemption or after
giving effect thereto no Default or Event of Default under this Agreement shall
exist and be continuing.

     9.2  Mergers or Dispositions. Except as permitted under Section 9.5 hereof
enter into any merger or consolidation or sell, lease, transfer, or dispose of
all, substantially all, or any material part of its assets, except mergers of
which Company is the surviving entity.

     9.3  Guaranties. Guarantee, endorse, or otherwise become secondarily liable
for or upon the obligations of others, except (a) by endorsement for deposit in
the ordinary course of business, (b) guaranties in favor of Agent and the Banks,
and (c) unsecured guarantees by Company of the obligations of its Subsidiaries
to the extent the underlying obligations are permitted under this Agreement.

     9.4  Indebtedness. Become or remain obligated for any indebtedness for
borrowed money, or for any indebtedness incurred in connection with the
acquisition of any property, real or personal, tangible or intangible, except:

     (a)  the Indebtedness under this Agreement and the other Loan Documents;

     (b)  current unsecured trade payables and accrued liabilities arising in
          the ordinary course of Company's or any Subsidiary's business,
          deferred income tax and purchase accounting reserves;

     (c)  indebtedness described in attached Schedule 7.16;

     (d)  unsecured indebtedness of Company to a Guarantor or a Guarantor to
          another Guarantor or a Guarantor to Company;

     (e)  other unsecured indebtedness not exceeding $100,000 in the aggregate
          at any time outstanding;

     (f)  Subordinated Debt;

     (g)  indebtedness under any Interest Rate Protection Agreements;

     (h)  purchase money indebtedness for the acquisition of fixed assets in an
          amount not to exceed $500,000 in the aggregate during any fiscal year
          of Company (determined on a combined basis for Company and its
          Subsidiaries);

     (i)  unsecured indebtedness of Densitron Microwave Limited or DML Microwave

<PAGE>   70

          Limited under an overdraft line of credit in an amount not exceeding
          500,000 Pounds Sterling in the aggregate at any time outstanding; and

     (j)  unsecured indebtedness of DML Microwave Limited to MCE Europe, Inc. in
          an amount not exceeding 3,000,000 Pounds Sterling incurred to
          consummate the Transaction and until June 30, 2000 unsecured
          indebtedness of Densitron Microwave Limited to MCE Europe, Inc. in an
          amount not to exceed 2,000,000 Pounds Sterling incurred for working
          capital purposes.

     9.5  Acquisitions. Purchase or otherwise acquire or become obligated for
the purchase of all or substantially all of the assets or business interests of
any person, firm or corporation or any shares of stock of any corporation,
trusteeship or association or in any other manner effectuate or attempt to
effectuate an expansion of present business by acquisition, other than Permitted
Acquisitions.

     9.6  Investments. Make or allow to remain outstanding any investment
(whether such investment shall be of the character of investment in shares of
stock, evidences of indebtedness or other securities or otherwise) in, or any
loans or advances or extensions of credit to, any person, firm, corporation or
other entity or association, except:

     (a)  Company's investment in the Guarantors;

     (b)  loans and advances permitted under Section 9.4(d) and 9.4(j) hereof;

     (c)  investments (other than loans or advances) by a Guarantor in another
          Guarantor or a Guarantor in Company;

     (d)  investments of surplus cash in cash equivalents;

     (e)  loans and advances to management employees made to enable them to
          purchase an equity interest in Company not to exceed $150,000 in
          aggregate amount at any time outstanding;

     (f)  sales on open account or in the ordinary course of business;

     (g)  other loans, advances and investments not exceeding $500,000 in the
          aggregate at any time outstanding;

     (h)  deposits made in the ordinary course of business in order to obtain
          goods and services; and

     (i)  investments which constitute or are part of a Permitted Acquisition,
          including the equity investment by MCE Europe, Inc. in DML Microwave
          Limited in an

<PAGE>   71

          amount not exceeding 2,000,000 Pounds Sterling incurred in connection
          with the Transaction.

     9.7  Liens. Affirmatively pledge or mortgage any of its assets, whether now
owned or hereafter acquired, or create, suffer or permit to exist any Lien
thereon, except:

     (a)  Liens in favor of the Agent to secure the Indebtedness;

     (b)  the Permitted Encumbrances;

     (c)  Liens described in attached Schedule 7.5; and

     (d)  Liens upon fixed assets acquired by Company or a Subsidiary after the
          date of this Agreement (including by virtue of a Capital Lease)
          provided that (i) any such Lien is created solely for the purpose of
          securing indebtedness representing, or incurred to finance, the cost
          of the item of property subject thereto; (ii) the principal amount of
          the indebtedness secured by such Lien is initially at least 70% and
          does not exceed 100% of the fair value of the property at the time it
          was acquired, (iii) the Lien does not cover any other property other
          than such item of property, and (iv) the incurrence of the
          indebtedness secured by such Lien is permitted by Section 9.4(h)
          hereof.

     9.8  Accounts Receivable. Sell, assign, transfer or confer a security
interest in any account, contract, note, trade acceptance or other receivable,
except to Agent on behalf of the Banks and except, until October 31, 1999 only,
the factoring of accounts by Densitron Microwave Limited in accordance with its
factoring arrangements in effect on the date of execution of this Agreement.

     9.9  Business Purposes. Materially alter the character of its businesses
from that conducted as of the date of this Agreement.

     9.10 Dividends. Declare or pay any dividends on, or make any other
distribution (whether by reduction of capital or otherwise) with respect to any
shares of its stock, except for (a) dividends by Subsidiaries to Company, (b)
dividends paid during any fiscal year of Company to the extent not exceeding
five percent (5%) of Consolidated Net Income for such fiscal year if at the time
such dividends are declared and paid and after giving effect thereto, no Default
or Event of Default hereunder shall exist and be continuing, and (c) dividends
with respect to Company's Series A Preferred Stock.

     9.11 Capital Expenditures. Make any Capital Expenditure during any single
fiscal year the aggregate amount of all Capital Expenditures made by Company and
its Subsidiaries during such period would exceed $2,500,000 provided, that
Company and its Subsidiaries may make additional Capital Expenditures in any
annual period commencing January 1 in each case in an

<PAGE>   72

amount equal to the excess of the maximum amount of Capital Expenditures
specified above for the immediately previous annual period over the amount of
Capital Expenditures actually made in such period; and provided, further, in
calculating the limitation for purposes of this Section 9.11, the Inmet Cap Ex
shall be excluded.

     9.12 Transactions with Affiliates. Enter into any transaction or series of
transactions with any Affiliate other than on terms and conditions as favorable
to Company or the Subsidiary (as applicable) as would be obtainable in a
comparable arm's-length transaction with a Person other than an Affiliate except
transactions between Company and any wholly owned Subsidiary.

     9.13 Limitation on Negative Pledge Clauses. Except for agreements,
documents or instruments pursuant to which Liens not prohibited by the terms of
this Agreement are created, entered into, or allow to exist, any agreement,
document or instrument which would restrict or prevent Company and its their
Subsidiaries from granting Agent on behalf of Banks liens upon, security
interests in and pledges of their respective assets which are senior in priority
to all other Liens.

     9.14 Prepayment of Debts. Prepay, purchase, redeem or defease any Debt for
money borrowed or any Capital Leases excluding, subject to the terms hereof, the
Indebtedness.

     9.15 Subordinated Debt. Amend or modify any document evidencing any
Subordinated Debt or make any payment with respect to the Subordinated Debt
except for regularly scheduled payments of principal and interest, subject to
the blockage provisions contained in the Subordinated Debt Documents.

     9.16 Modification of Certain Agreements. Make, permit or consent to any
amendment or other modification to the constitutional documents of Company or
the Transaction Documents, except to the extent that any such amendment (i) does
not violate the terms and conditions of this Agreement or any of the other Loan
Documents, (ii) does not adversely affect the interest of the Banks as creditor
under this Agreement, the other Loan Documents or any other document or
instrument in any respect and (iii) could not reasonably be expected to have a
Material Adverse Effect.

     10.  DEFAULTS

     10.1 Events of Default. The occurrence of any of the following events shall
constitute an Event of Default hereunder:

          (a) non-payment when due of (i) the principal or interest under any of
     the Notes issued hereunder in accordance with the terms thereof, (ii) any
     reimbursement obligation under Section 3.6 hereof, or (iii) any Fees;

          (b) (i) default in the observance or performance of any of the
     conditions,

<PAGE>   73

     covenants or agreements of Company set forth in Section 8.16 through 8.19
     or Section 9.1 through 9.16, inclusive, or (ii) default in the observance
     or performance of any of the conditions, covenants or agreements of Company
     set forth in Section 8.1(a), (b), 8.2(a), (b), (d), 8.5, 8.6, 8.13 or 8.21
     and continuance thereof for ten (10) days;

          (c) default in the observance or performance of any of the other
     conditions, covenants or agreements set forth in this Agreement by Company
     and continuance thereof for a period of thirty (30) consecutive days;

          (d) any representation or warranty made by Company herein or by
     Company or any Guarantor in any instrument submitted pursuant hereto or by
     any other party to the Loan Documents proves untrue in any material adverse
     respect when made;

          (e) default in the observance or performance of or failure to comply
     with any of the conditions, covenants or agreements of Company or any
     Guarantor set forth in any of the other Loan Documents, and the continuance
     thereof for ten (10) days after notice to Company from Agent;

          (f) default in the payment of any other obligation of Company, any
     Subsidiary or any Guarantor for borrowed money in an aggregate amount in
     excess of One Hundred Thousand Dollars ($100,000), or in the observance or
     performance of any conditions, covenants or agreements related or given
     with respect to any obligations for borrowed money in an aggregate amount
     in excess of One Hundred Thousand Dollars ($100,000) sufficient to permit
     the holder thereof to accelerate the maturity of such obligation, unless
     such default is being contested in good faith by Company, any Subsidiary or
     Guarantor, as applicable, and Company, such Subsidiary or such Guarantor
     has established adequate reserves;

          (g) the rendering of any judgment(s) for the payment of money in
     excess of the sum of One Hundred Thousand Dollars ($100,000) individually
     or in the aggregate against Company or any of its Subsidiaries, and such
     judgments shall remain unpaid, unvacated, unbonded or unstayed by appeal or
     otherwise for a period of thirty (30) consecutive days, except as covered
     by adequate insurance with a reputable carrier and an action is pending in
     which an active defense is being made with respect thereto;

          (h) the occurrence of a "reportable event", as defined in ERISA, which
     is determined to constitute grounds for termination by the Pension Benefit
     Guaranty Corporation of any Pension Plan maintained or contributed to by or
     on behalf of the Company or any of its Subsidiaries for the benefit of any
     of its employees or for the appointment by the appropriate United States
     District Court of a trustee to administer such Pension Plan and such
     reportable event is not corrected and such determination is not revoked
     within thirty (30) days after notice thereof has been given to the plan
     administrator of such Pension Plan (without limiting any of Agent's or any
     Bank's other

<PAGE>   74

     rights or remedies hereunder), or the institution of proceedings by the
     Pension Benefit Guaranty Corporation to terminate any such Pension Plan or
     to appoint a trustee by the appropriate United States District Court to
     administer any such Pension Plan;

          (i)  if (i) there shall be any change for any reason whatsoever in the
     management, ownership or control of Company or any Guarantor which shall in
     the reasonable judgment of Bank materially adversely affect future
     prospects for the successful operation of Company and the Guarantors; or
     (ii) Company shall cease to own one hundred percent (100%) of the economic
     common equity interest of its Subsidiaries;

          (j)  any revocation of the Guaranty;

          (k)  If a creditors' committee shall have been appointed for the
     business of Company, any Subsidiary or any Guarantor in connection with any
     bankruptcy or insolvency; or if Company, any Subsidiary or any Guarantor
     shall have made a general assignment for the benefit of creditors or shall
     have been adjudicated bankrupt, or shall have filed a voluntary petition in
     bankruptcy or for reorganization or to effect a plan or arrangement with
     creditors; or shall file an answer to a creditor's petition or other
     petition filed against it, admitting the material allegations thereof for
     an adjudication in bankruptcy or for reorganization; or shall have applied
     for or permitted the appointment of a receiver, or trustee or custodian for
     any of its property or assets; or such receiver, trustee or custodian shall
     have been appointed for any material part of its property or assets
     (otherwise than upon application or consent of Company, a Subsidiary or any
     Guarantor, as applicable) and such receiver, trustee or custodian so
     appointed shall not have been discharged within sixty (60) days after the
     date of his appointment or if an order shall be entered and shall not be
     dismissed or stayed within sixty (60) days from its entry, approving any
     petition for reorganization of Company, any Subsidiary or any Guarantor.

     10.2 Exercise of Remedies. If an Event of Default has occurred and is
continuing hereunder: (v) the Agent shall, upon being directed to do so by the
Majority Banks, declare the Revolving Credit Aggregate Commitment terminated;
(w) the Agent shall, upon being directed to do so by the Majority Banks, declare
the entire unpaid principal Indebtedness, including the Notes, immediately due
and payable, without presentment, notice or demand, all of which are hereby
expressly waived by Company; (x) upon the occurrence of any Event of Default
specified in subsection 10.1(k), above, and notwithstanding the lack of any
declaration by Agent under preceding clause (w), the entire unpaid principal
Indebtedness, including the Notes, shall become automatically and immediately
due and payable, and the Revolving Credit Aggregate Commitment shall be
automatically and immediately terminated; (y) the Agent shall, upon being
directed to do so by the Majority Banks, demand immediate delivery of cash
collateral, and the Company and each Account Party agrees to deliver such cash
collateral upon demand, in an amount equal to the maximum amount that may be
available to be drawn at any time prior to the stated expiry of all outstanding
Letters of Credit, and (z) the Agent shall, if directed to do so by

<PAGE>   75

the Majority Banks or the Banks, as applicable (subject to the terms hereof),
exercise any remedy permitted by this Agreement, the Loan Documents or law.

     10.3 Rights Cumulative. No delay or failure of Agent and/or Banks in
exercising any right, power or privilege hereunder shall affect such right,
power or privilege, nor shall any single or partial exercise thereof preclude
any further exercise thereof, or the exercise of any other power, right or
privilege. The rights of Agent and Banks under this Agreement are cumulative and
not exclusive of any right or remedies which Banks would otherwise have.

     10.4 Waiver by Company of Certain Laws. To the extent permitted by
applicable law, Company hereby agrees to waive, and does hereby absolutely and
irrevocably waive and relinquish the benefit and advantage of any valuation,
stay, appraisement, extension or redemption laws now existing or which may
hereafter exist, which, but for this provision, might be applicable to any sale
made under the judgment, order or decree of any court, on any claim for interest
on the Notes, or any Lien contemplated by or granted under or in connection with
this Agreement. These waivers have been voluntarily given, with full knowledge
of the consequences thereof.

     10.5 Waiver of Defaults. No Event of Default shall be waived by the Banks
except in a writing signed by an officer of the Agent in accordance with Section
14.11 hereof. No single or partial exercise of any right, power or privilege
hereunder, nor any delay in the exercise thereof, shall preclude other or
further exercise of their rights by Agent or the Banks. No waiver of any Event
of Default shall extend to any other or further Event of Default. No forbearance
on the part of the Agent or the Banks in enforcing any of their rights shall
constitute a waiver of any of their rights. Company expressly agrees that this
Section may not be waived or modified by the Banks or Agent by course of
performance, estoppel or otherwise.

     10.6 Set Off. Upon the occurrence and during the continuance of any Event
of Default, each Bank may at any time and from time to time, without notice to
the Company (any requirement for such notice being expressly waived by the
Company) set off and apply against any and all of the obligations of the Company
now or hereafter existing under this Agreement, whether owing to such Bank or
any other Bank or the Agent, any and all deposits (general or special, time or
demand, provisional or final) at any time held and other indebtedness at any
time owing by such Bank to or for the credit or the account of the Company and
any property of the Company from time to time in possession of such Bank,
irrespective of whether or not such deposits held or indebtedness owing by such
Bank may be contingent and unmatured and regardless of whether any Collateral
then held by Agent or any Bank is adequate to cover the Indebtedness. Promptly
following any such setoff, such Bank shall give written notice to Agent and to
Company of the occurrence thereof. The Company hereby grants to the Banks and
the Agent a Lien on all such deposits, indebtedness and property as collateral
security for the payment and performance of all of the obligations of the
Company under this Agreement. The rights of each Bank under this Section 10.6
are in addition to the other rights and remedies which such Bank may have.

<PAGE>   76

     11.  PAYMENTS, RECOVERIES AND COLLECTIONS.

     11.1 Payment Procedure. (a) All payments by Company of principal of, or
interest on, the Notes, or of Fees, shall be made without setoff or counterclaim
on the date specified for payment under this Agreement not later than 11:00 a.m.
(Detroit time) in immediately available funds to Agent, for the ratable account
of the Banks, at Agent's office located at One Detroit Center, Detroit, Michigan
48226-3289, (care of Agent's Eurodollar Lending Office, for Eurodollar-based
Advances and portions of the Term Loan bearing interest at the Eurodollar-based
Rate). Upon receipt by the Agent of each such payment, the Agent shall make
prompt payment in like funds received to each Bank as appropriate, or, in
respect of Eurodollar-based Advances and portions of the Term Loan bearing
interest at the Eurodollar-based Rate, to such Bank's Eurodollar Lending Office.

          (b) Unless the Agent shall have been notified by Company prior to the
     date on which any payment to be made by Company is due that Company does
     not intend to remit such payment, the Agent may, in its sole discretion and
     without obligation to do so, assume that the Company has remitted such
     payment when so due and the Agent may, in reliance upon such assumption,
     make available to each Bank on such payment date an amount equal to such
     Bank's share of such assumed payment. If Company has not in fact remitted
     such payment to the Agent each Bank shall forthwith on demand repay to the
     Agent the amount of such assumed payment made available or transferred to
     such Bank, together with the interest thereon, in respect of each day from
     and including the date such amount was made available by the Agent to such
     Bank to the date such amount is repaid to the Agent at a rate per annum
     equal to (i) for Prime-based Advances or any portion of the Term Loan which
     bears interest at the Prime-based Rate, the Federal Funds Effective Rate
     (daily average), as the same may vary from time to time, and (ii) with
     respect to Eurodollar-based Advances or any portion of the Term Loan which
     bears interest at the Eurodollar-based Rate, Agent's aggregate marginal
     cost (including the cost of maintaining any required reserves or deposit
     insurance and of any fees, penalties, overdraft charges or other costs or
     expenses incurred by Agent) of carrying such amount.

          (c) Subject to the definition of Interest Period, whenever any payment
     to be made hereunder shall otherwise be due on a day which is not a
     Business Day, such payment shall be made on the next succeeding Business
     Day and such extension of time shall be included in computing interest, if
     any, in connection with such payment.

          (d) All payments to be made by the Company under this Agreement or any
     of the Notes (including without limitation payments under the Swing Line
     Note) shall be made without set-off or counterclaim, as aforesaid, and
     without deduction for or on account of any present or future withholding or
     other taxes of any nature imposed by any governmental authority or of any
     political subdivision thereof or any federation or organization of which
     such governmental authority may at the time of payment be a

<PAGE>   77

     member, unless Company is compelled by law to make payment subject to such
     tax. In such event, Company shall:

               (i)  pay to the Agent for Agent's own account and/or, as the case
                    may be, for the account of the Banks (and, in the case of
                    Advances of the Swing Line, pay to the Swing Line Bank which
                    funded such Advances) such additional amounts as may be
                    necessary to ensure that the Agent and/or such Bank or Banks
                    receive a net amount equal to the full amount which would
                    have been receivable had payment not been made subject to
                    such tax; and

               (ii) remit such tax to the relevant taxing authorities according
                    to applicable law, and send to the Agent or the applicable
                    Bank (including the Swing Line Bank) or Banks, as the case
                    may be, such certificates or certified copy receipts as the
                    Agent or such Bank or Banks shall reasonably require as
                    proof of the payment by the Company, of any such taxes
                    payable by the Company.

     As used herein, the terms "tax", "taxes" and "taxation" include all
existing taxes, levies, imposts, duties, charges, fees, deductions and
withholdings and any restrictions or conditions resulting in a charge together
with interest thereon and fines and penalties with respect thereto which may be
imposed by reason of any violation or default with respect to the law regarding
such tax, assessed as a result of or in connection with the transactions
hereunder, or the payment and or receipt of funds hereunder, or the payment or
delivery of funds into or out of any jurisdiction other than the United States
(whether assessed against Company, Agent or any of the Banks).

     11.2 Application of Proceeds. Notwithstanding anything to the contrary in
this Agreement, after and during the continuance of an Event of Default, the
proceeds of any offsets or voluntary payments by Company or any Guarantor or
others and any other sums received or collected in respect of the Indebtedness,
shall be applied, first, to the Notes on a pro rata basis (in such order and
manner as determined by the Majority Banks; subject, however, to the applicable
Percentages of the Advances and the Term Loan held by each of the Banks), next,
to any other Indebtedness on a pro rata basis, and then, if there is any excess,
to Company. The application of such proceeds and other sums to the Revolving
Credit Notes and the Term Notes shall be based on each Bank's Percentage of the
aggregate of the Advances and the Term Loan.

     11.3 Pro-rata Recovery. If any Bank shall obtain any payment or other
recovery (whether voluntary, involuntary, by application of offset or otherwise)
on account of principal of, or interest on, any of the Revolving Credit Notes or
Term Notes in excess of its pro rata share of payments then or thereafter
obtained by all Banks upon principal of and interest on all Revolving Credit
Notes and Term Notes, such Bank shall purchase from the other Banks such
participations in the Revolving Credit Notes and Term Notes held by them as
shall be necessary to cause such

<PAGE>   78

purchasing Bank to share the excess payment or other recovery ratably in
accordance with the Percentage with each of them; provided, however, that if all
or any portion of the excess payment or other recovery is thereafter recovered
from such purchasing holder, the purchase shall be rescinded and the purchase
price restored to the extent of such recovery, but without interest.

     11.4 Set Off. In addition to and not in limitation of any rights of any
Bank or other holder of any of the Notes under applicable law, each Bank and
each other such holder shall, upon acceleration of the Indebtedness under and in
accordance with the terms of the Notes and without notice or demand of any kind,
have the right to appropriate and apply to the payment of the Notes owing to it
any and all balances, credits, deposits, accounts or moneys of Company then or
thereafter with such Bank or other holder; provided, however, that any such
amount so applied by any Bank or other holder on any of the Notes owing to it
shall be subject to the provisions of Section 11.3, hereof.

     12.  CHANGES IN LAW OR CIRCUMSTANCES; INCREASED COSTS; MARGIN ADJUSTMENTS.

     12.1 Reimbursement of Prepayment Costs. If Company makes any payment of
principal with respect to any Eurodollar-based Advance, Quoted Rate Advance or
portion of the Term Loan which bears interest at the Eurodollar-based Rate on
any day other than the last day of the Interest Period applicable thereto
(whether voluntarily, by acceleration, or otherwise), or if Company fails to
borrow, refund or convert into any Eurodollar-based Advance, Quoted Rate Advance
or portion of the Term Loan which bears interest at the Eurodollar-based Rate
after notice has been given by Company to Agent in accordance with the terms
hereof requesting such Advance, or if Company fails to borrow any
Eurodollar-based Advance, Quoted Rate Advance or portion of the Term Loan which
bears interest at the Eurodollar-based Rate after notice has been given by
Company to Agent in accordance with the terms hereof requesting such Advance or
advance of the Term Loan, or if Company fails to make any payment of principal
or interest in respect of a Eurodollar-based Advance, Quoted Rate Advance or
portion of the Term Loan which bears interest at the Eurodollar-based Rate when
due, Company shall reimburse Agent and Banks, as the case may be on demand for
any resulting loss, cost or expense actually incurred by Agent and Banks, as the
case may be, as a result thereof, including, without limitation, any such loss,
cost or expense incurred in obtaining, liquidating, employing or redeploying
deposits from third parties, whether or not Agent and Banks, as the case may be,
shall have funded or committed to fund such Advance or advance of the Term Loan.
Such amount payable by Company to Agent and Banks, as the case may be may
include, without limitation, an amount equal to the excess, if any, of (a) the
amount of interest which would have accrued on the amount so prepaid, or not so
borrowed, refunded or converted, for the period from the date of such prepayment
or of such failure to borrow, refund or convert, through the last day of the
relevant Interest Period, at the applicable rate of interest for said Advance(s)
or portion of the Term Loan which bears interest at the Eurodollar-based Rate
provided under this Agreement, over (b) the amount of interest (as reasonably
determined by Agent and Banks, as the case may be) which would have accrued to
Agent and Banks, as the case may be on such amount by placing such amount on
deposit for a comparable period with leading banks in the interbank eurodollar

<PAGE>   79

market. Calculation of any amounts payable to any Bank under this paragraph
shall be made as though such Bank shall have actually funded or committed to
fund the relevant Advance, or portion of the Term Loan which bears interest at
the Eurodollar-based Rate through the purchase of an underlying deposit in an
amount equal to the amount of such Advance or portion of the Term Loan which
bears interest at the Eurodollar-based Rate and having a maturity comparable to
the relevant Interest Period; provided, however, that any Bank may fund any
Eurodollar-based Advance, Quoted Rate Advance or portion of the Term Loan which
bears interest at the Eurodollar-based Rate, in any manner it deems fit and the
foregoing assumptions shall be utilized only for the purpose of the calculation
of amounts payable under this paragraph. Upon the written request of Company,
Agent and Banks shall deliver to Company a certificate setting forth the basis
for determining such losses, costs and expenses, which certificate shall be
conclusively presumed correct, absent manifest error.

     12.2 Agent's Eurodollar Lending Office. For any Advance or portion of the
Term Loan which bears interest at the Eurodollar-based Rate, if Agent shall
designate a Eurodollar Lending Office which maintains books separate from those
of the rest of Agent, Agent shall have the option of maintaining and carrying
the relevant Advance or portion of the Term Loan which bears interest at the
Eurodollar-based Rate on the books of such Eurodollar Lending Office.

     12.3 Circumstances Affecting Eurodollar-based Rate Availability. If with
respect to any Interest Period, Agent or the Banks (after consultation with
Agent) shall reasonably determine that, by reason of circumstances affecting the
interbank markets generally, deposits in eurodollars in the applicable amounts
are not being offered to the Agent for such Interest Period, then Agent shall
forthwith give notice thereof to the Company. Thereafter, until Agent notifies
Company that such circumstances no longer exist, the obligation of Banks to make
Eurodollar-based Advances and the right of Company to convert an Advance to or
refund an Advance as a Eurodollar-based Advance or select the Eurodollar-based
Rate for any portion of the Term Loan shall be suspended, and the Company shall
repay in full the then outstanding principal amount of each such
Eurodollar-based Advance or portion of the Term Loan covered hereby together
with accrued interest thereon, any amounts payable under Section 12.1, hereof,
and all other amounts payable hereunder on the last day of the then current
Interest Period applicable to such Advance or portion of the Term Loan. Upon the
date for repayment as aforesaid and unless Company notifies Agent to the
contrary within two (2) Business Days after receiving a notice from Agent
pursuant to this Section, such outstanding principal amount shall bear interest
at the Prime-based Rate as of the last day of such Interest Period.

     12.4 Laws Affecting Eurodollar-based Rate Availability. In the event that
any applicable law, rule or regulation (whether domestic or foreign) now or
hereafter in effect and whether or not currently applicable to any Bank or the
Agent or any interpretation or administration thereof by any governmental
authority charged with the interpretation or administration thereof, or
compliance by the Agent or any of the Banks (or any of their respective
Eurodollar Lending Offices) with any request or directive (whether or not having
the force of law) of any such authority, shall make it unlawful or impossible
for any of the Banks (or

<PAGE>   80

any of their respective Eurodollar Lending Offices) to honor its obligations
hereunder to make or maintain any eurodollar-based Advance or portion of the
Term Loan at the Eurodollar-based Rate, Agent shall so notify Company and the
right of Company to convert an Advance or refund an Advance as a
Eurodollar-based Advance or select the Eurodollar-based Rate with respect to any
portion of the Term Loan, shall be suspended and thereafter Company may select
as Applicable Interest Rates only those which remain available and which are
permitted to be selected hereunder, and if any of the Banks may not lawfully
continue to maintain an Advance or portion of the Term Loan to the end of the
then current Interest Period applicable thereto at the Eurodollar-based Rate,
Company shall immediately prepay such Advance or portion of the Term Loan,
together with interest to the date of payment, and any amounts payable under
Sections 12.1 with respect to such prepayment and the Applicable Interest Rate
shall immediately be converted to the Prime-based Rate.

     12.5 Increased Costs. In the event that any applicable law, rule or
regulation (whether domestic or foreign) now or hereafter in effect and whether
or not currently applicable to any Bank or the Agent or any interpretation or
administration thereof by any governmental authority, central bank or comparable
agency charged with the interpretation or administration thereof, or compliance
by Agent or any of the Banks with any request or directive (whether or not
having the force of law) made by any such authority, central bank or comparable
agency after the date hereof:

          (a) shall subject the Agent or any of the Banks to any tax, duty or
     other charge with respect to any Advance, or any Note or shall change the
     basis of taxation of payments to the Agent or any of the Banks of the
     principal of or interest on any Advance, or any Note or any other amounts
     due under this Agreement in respect thereof (except for changes in the rate
     of tax on the overall net income or revenues of the Agent or of any of the
     Banks imposed by the United States of America or the jurisdiction in which
     such Bank's principal executive office is located); or

          (b) shall impose, modify or deem applicable any reserve (including,
     without limitation, any imposed by the Board of Governors of the Federal
     Reserve System), special deposit or similar requirement against assets of,
     deposits with or for the account of, or credit extended by the Agent or any
     of the Banks or shall impose on the Agent or any of the Banks or the
     interbank markets any other condition affecting any Advance or any of the
     Notes;

and the result of any of the foregoing is to increase the costs to the Agent or
any of the Banks of making, funding or maintaining any part of the Indebtedness
hereunder with interest at the Eurodollar-based Rate or to reduce the amount of
any sum received or receivable by the Agent or any of the Banks under this
Agreement or under the Notes by an amount deemed by the Agent or any Bank to be
material then Agent or Bank, as the case may be, shall promptly notify the
Company of such fact and demand compensation therefor and, within fifteen (15)
days after demand by Agent or such Bank, Company agrees to pay to Agent or such
Bank such additional

<PAGE>   81

amount or amounts as will compensate Agent or such Bank or Banks for such
increased cost or reduction. Each Bank agrees that, as promptly as practical
after it becomes aware of the occurrence of any event or the existence of a
condition that will cause such Bank to be entitled to compensation under this
Section, it will, to the extent not inconsistent with such Bank's internal
policies, use reasonable efforts to make, fund or maintain any affected
Eurodollar-based Advance through another lending office of such Bank if as a
result thereof the additional monies which would otherwise be required to be
paid in respect of such Eurodollar-based Advance would be materially reduced and
if, as determined by such Bank, in its reasonable discretion, the making,
funding or maintaining of such Eurodollar-based Advance through such other
lending office would not materially adversely affect such Advance or such Bank.
Company shall pay all reasonable expenses incurred by a Bank in utilizing
another lending office pursuant to this Section. A certificate of Agent or such
Bank setting forth the basis for determining such additional amount or amounts
necessary to compensate Agent or such Bank or Banks shall be conclusively
presumed to be correct save for manifest error.

     12.6 [Reserved].

     12.7 Other Increased Costs. In the event that after the date hereof the
adoption of or any change in any applicable law, treaty, rule or regulation
(whether domestic or foreign) now or hereafter in effect and whether or not
presently applicable to any Bank or Agent, or any interpretation or
administration thereof by any governmental authority charged with the
interpretation or administration thereof, or compliance by any Bank or Agent
with any guideline, request or directive of any such authority (whether or not
having the force of law), including any risk based capital guidelines, affects
or would affect the amount of capital required or expected to be maintained by
such Bank or Agent (or any corporation controlling such Bank or Agent) and such
Bank or Agent, as the case may be, reasonably determines that the amount of such
capital is increased by or based upon the existence of such Bank's or Agent's
obligations hereunder and such increase has the effect of reducing the rate of
return on such Bank's or Agent's (or such controlling corporation's) capital as
a consequence of such obligations to a level below that which such Bank or Agent
(or such controlling corporation) could have achieved but for such circumstances
(taking into consideration its policies with respect to capital adequacy) by an
amount deemed by such Bank or Agent to be material, then the Company shall pay
to such Bank or Agent, as the case may be, from time to time, upon request by
such Bank or Agent, additional amounts sufficient to compensate such Bank or
Agent (or such controlling corporation) for any increase in the amount of
capital and reduced rate of return which such Bank or Agent reasonably
determines to be allocable to the existence of such Bank's or Agent's
obligations hereunder. A statement as to the amount of such compensation,
prepared in good faith and in reasonable detail by such Bank or Agent, as the
case may be, shall be submitted by such Bank or by Agent to the Company,
reasonably promptly after becoming aware of any event described in this Section
12.7 and shall be conclusive, absent manifest error in computation.

     12.8 Margin Adjustments. Adjustments in the applicable Margin, based on
Schedule 1, shall be implemented as follows:

<PAGE>   82
        (a)  Such adjustments shall be given prospective effect only, effective
(i) as to the Applicable L/C Fee Percentage and Margins relating to Prime-based
Advances or portion of the Term Loan which bears interest at the Prime-based
Rate, upon the required date of delivery of the Covenant Compliance Reports
under Section 8.2 hereof, in each case establishing applicability of the
appropriate adjustment, and (ii) as to each Eurodollar-based Advance outstanding
hereunder or portion of the Term Loan which bears interest at the
Eurodollar-based Rate, effective upon the expiration of the applicable Interest
Period(s), if any, in effect on the date of the delivery of such financial
statements, in each case with no retroactivity or claw-back. In the event
Company fails timely to deliver the Covenant Compliance Reports required under
Section 8.2, then from the date of such Covenant Compliance Reports (but no
later than the date delivery of such reports was required) until such reports
are delivered, the margins and fee percentages shall be the highest Margin set
forth in the pricing matrix.

        (b)  With respect to Eurodollar-based Advances or portion of the Term
Loan which bears interest at the Eurodollar-based Rate outstanding hereunder, an
adjustment hereunder, after becoming effective, shall remain in effect only
through the end of the applicable Interest Period(s) for such Eurodollar-based
Advances or portion of the Term Loan which bears interest at the
Eurodollar-based Rate, if any; provided, however, that upon any change in the
Margin level then in effect, as aforesaid, or the occurrence of any other event
which under the terms hereof causes such adjustment no longer to be applicable,
then any such subsequent adjustment or no adjustment, as the case may be, shall
be effective (and said pricing shall thereby be adjusted up or down, as
applicable) with the commencement of each Interest Period following such change
or event, all in accordance with the preceding subparagraph.

        (c)  Such Margin adjustments under this Section 12.8 shall be made
irrespective of, and in addition to, any other interest rate adjustments
hereunder.

        (d)  From the date hereof until receipt of the financial statements
required under Section 8.1(b) for the quarter ending June 30, 1999, the Margin
shall be Level III.

        13.  AGENT

        13.1 Appointment of Agent. Each Bank and the holder of each Note
irrevocably appoints and authorizes the Agent to act on behalf of such Bank or
holder under this Agreement and the Loan Documents and to exercise such powers
hereunder and thereunder as are specifically delegated to Agent by the terms
hereof and thereof, together with such powers as may be reasonably incidental
thereto, including without limitation the power to execute or authorize the
execution of financing or similar statements or notices, and other documents. In
performing its functions and duties under this Agreement, the Agent shall act
solely as agent of the Banks and does not assume and shall not be deemed to have
assumed any obligation towards or relationship of agency or trust with or for
Company. Each Bank agrees (which agreement shall survive any termination of this
Agreement) to reimburse Agent for all reasonable out-of-pocket

<PAGE>   83

expenses (including house and outside attorneys' fees and disbursements)
incurred by Agent hereunder or in connection herewith or with an Event of
Default or in enforcing the obligations of Company under this Agreement or the
Loan Documents or any other instrument executed pursuant hereto, and for which
Agent is not reimbursed by Company, pro rata according to such Bank's
Percentage. Agent shall not be required to take any action under the Loan
Documents, or to prosecute or defend any suit in respect of the Loan Documents,
unless indemnified to its satisfaction by the Banks against loss, costs,
liability and expense. If any indemnity furnished to Agent shall become
impaired, it may call for additional indemnity and cease to do the acts
indemnified against until such additional indemnity is given.

        13.2 Deposit Account with Agent. Company hereby authorizes Agent, in
Agent's sole discretion, to charge its general deposit account(s), if any,
maintained with Agent for the amount of any principal, interest, or other
amounts or costs due under this Agreement when the same become due and payable
under the terms of this Agreement or the Notes.

        13.3 Scope of Agent's Duties. The Agent shall have no duties or
responsibilities except those expressly set forth herein, and shall not, by
reason of this Agreement or otherwise, have a fiduciary relationship with any
Bank (and no implied covenants or other obligations shall be read into this
Agreement against the Agent). Neither Agent nor any of its directors, officers,
employees or agents shall be liable to any Bank for any action taken or omitted
to be taken by it under this Agreement or any document executed pursuant hereto,
or in connection herewith or therewith with the consent or at the request of the
Majority Banks or in the absence of their own gross negligence or wilful
misconduct, nor be responsible for or have any duties to ascertain, inquire into
or verify (a) any recitals or warranties herein or therein, (b) the
effectiveness, enforceability, validity or due execution of this Agreement or
any document executed pursuant hereto or any security thereunder, (c) the
performance by Company of its obligations hereunder or thereunder, or (d) the
satisfaction of any condition hereunder or thereunder, including without
limitation the making of any Advance or the issuance of any Letter of Credit.
Agent shall be entitled to rely upon any certificate, notice, document or other
communication (including any cable, telegraph, telex, facsimile transmission or
oral communication) believed by it to be genuine and correct and to have been
sent or given by or on behalf of a proper person. Agent may treat the payee of
any Note as the holder thereof. Agent may employ agents and may consult with
legal counsel (who may be counsel for Company), independent public accountants
and other experts selected by it and shall not be liable to the Banks (except as
to money or property received by them or their authorized agents), for the
negligence or misconduct of any such agent selected by it with reasonable care
or for any action taken or omitted to be taken by it in good faith in accordance
with the advice of such counsel, accountants or experts.

        13.4 Successor Agent. Agent may resign as such at any time upon at least
30 days prior notice to Company and all Banks. If Agent at any time shall resign
or if the office of Agent shall become vacant for any other reason, Majority
Banks shall, by written instrument, appoint successor agent(s) satisfactory to
such Majority Banks, and, so long as no Default or Event of Default has occurred
and is continuing, to Company. Such successor agent shall thereupon

<PAGE>   84

become the Agent hereunder, as applicable, and shall be entitled to receive from
the prior Agent such documents of transfer and assignment as such successor
Agent may reasonably request. Any such successor Agent shall be a commercial
bank organized under the laws of the United States or any state thereof and
shall have a combined capital and surplus of at least $500,000,000. If a
successor is not so appointed or does not accept such appointment before the
resigning Agent's resignation becomes effective, the resigning Agent may appoint
a temporary successor to act until such appointment by the Majority Banks is
made and accepted or if no such temporary successor is appointed as provided
above by the resigning Agent, the Majority Banks shall thereafter perform all of
the duties of the resigning Agent hereunder until such appointment by the
Majority Banks is made and accepted. Such successor Agent shall succeed to all
of the rights and obligations of the resigning Agent as if originally named. The
resigning Agent shall duly assign, transfer and deliver to such successor Agent
all moneys at the time held by the resigning Agent hereunder after deducting
therefrom its expenses for which it is entitled to be reimbursed. Upon such
succession of any such successor Agent, the provisions of this Article 13 shall
continue in effect for the benefit of the resigning Agent in respect of any
actions taken or omitted to be taken by it while it was acting as Agent.

        13.5 Loans by Agent. Comerica Bank and its successors and assigns, in
its capacity as a Bank hereunder, shall have the same rights and powers
hereunder as any other Bank and may exercise or refrain from exercising the same
as though it were not the Agent. Comerica Bank and its affiliates may (without
having to account therefor to any Bank) accept deposits from, lend money to, and
generally engage in any kind of banking, trust, financial advisory or other
business with Company (or the shareholders of Company) as if it were not acting
as Agent hereunder, and may accept fees and other consideration therefor without
having to account for the same to the Banks.

        13.6 Credit Decisions. Each Bank acknowledges that it has, independently
of Agent and each other Bank and based on the financial statements of Company
and such other documents, information and investigations as it has deemed
appropriate, made its own credit decision to extend credit hereunder from time
to time. Each Bank also acknowledges that it will, independently of Agent and
each other Bank and based on such other documents, information and
investigations as it shall deem appropriate at any time, continue to make its
own credit decisions as to exercising or not exercising from time to time any
rights and privileges available to it under this Agreement or any document
executed pursuant hereto.

        13.7 Agent's Fees. Company shall pay to Agent the annual agency fee and
such other fees and charges in the amounts and at the times set forth in the
letter agreement between Company and Agent dated June 9, 1999. The Agent's Fees
described in this Section 13.7 shall not be refundable under any circumstances.

        13.8 Authority of Agent to Enforce Notes, This Agreement and other Loan
Documents. Each Bank, subject to the terms and conditions of this Agreement,
authorizes the Agent with full power and authority as attorney-in-fact to
institute and maintain actions, suits or proceedings for

<PAGE>   85

the collection and enforcement of the Notes and to file such proofs of debt or
other documents as may be necessary to have the claims of the Banks allowed in
any proceeding relative to Company, or any of its Subsidiaries, or their
respective creditors or affecting their respective properties, and to take such
other actions which Agent considers to be necessary or desirable for the
protection, collection and enforcement of the Notes, this Agreement or the other
Loan Documents.

        13.9  Indemnification. The Banks agree to indemnify the Agent and its
Affiliates (to the extent not reimbursed by Company, but without limiting any
obligation of Company to make such reimbursement), ratably according to their
respective Percentages, from and against any and all claims, damages, losses,
liabilities, costs or expenses of any kind or nature whatsoever (including,
without limitation, fees and disbursements of counsel) which may be imposed on,
incurred by, or asserted against the Agent and its Affiliates in any way
relating to or arising out of this Agreement, any of the other Loan Documents or
the transactions contemplated hereby or any action taken or omitted by the Agent
and its Affiliates under this Agreement or any of the other Loan Documents;
provided, however, that no Bank shall be liable for any portion of such claims,
damages, losses, liabilities, costs or expenses resulting from the Agent's or
its Affiliates gross negligence or willful misconduct. Without limitation of the
foregoing, each Bank agrees to reimburse the Agent and its Affiliates promptly
upon demand for its ratable share of any out-of-pocket expenses (including,
without limitation, reasonable fees and expenses of counsel) incurred by the
Agent and its Affiliates in connection with the preparation, execution,
delivery, administration, modification, amendment or enforcement (whether
through negotiations, legal proceedings or otherwise) of, or legal advice in
respect of rights or responsibilities under, this Agreement or any of the other
Loan Documents, to the extent that the Agent and its Affiliates is not
reimbursed for such expenses by Company, but without limiting the obligation of
Company to make such reimbursement. Each Bank agrees to reimburse the Agent and
its Affiliates promptly upon demand for its ratable share of any amounts owing
to the Agent by the Banks pursuant to this Section. If the indemnity furnished
to the Agent and its Affiliates under this Section shall, in the judgment of the
Agent, be insufficient or become impaired, the Agent may call for additional
indemnity from the Banks and cease, or not commence, to take any action until
such additional indemnity is furnished.

        13.10 Knowledge of Default. It is expressly understood and agreed that
the Agent shall be entitled to assume that no Event of Default has occurred and
is continuing, unless the officers of the Agent immediately responsible for
matters concerning this Agreement shall have been notified in a writing
specifying such Event of Default and stating that such notice is a "notice of
default" by a Bank or by Company. Upon receiving such a notice, the Agent shall
promptly notify each Bank of such Event of Default and provide each Bank with a
copy of such notice. Agent shall also furnish the Banks, promptly upon receipt,
with copies of all other notices, reports or other information required to be
provided by Company hereunder.

        13.11 Agent's Authorization; Action by Banks. Except as otherwise
expressly provided herein, whenever the Agent is authorized and empowered
hereunder on behalf of the Banks to

<PAGE>   86

give any approval or consent, or to make any request, or to take any other
action on behalf of the Banks (including without limitation the exercise of any
right or remedy hereunder or under the other Loan Documents), the Agent shall be
required to give such approval or consent, or to make such request or to take
such other action only when so requested in writing by the Majority Banks or the
Banks, as applicable hereunder. Action that may be taken by Majority Banks or
all of the Banks, as the case may be (as provided for hereunder) may be taken
(i) pursuant to a vote at a meeting (which may be held by telephone conference
call) as to which all of the Banks have been given reasonable advance notice, or
(ii) pursuant to the written consent of the requisite Percentages of the Banks
as required hereunder, provided that all of the Banks are given reasonable
advance notice of the requests for such consent.

        13.12 Enforcement Actions by the Agent. Except as otherwise expressly
provided under this Agreement or in any of the other Loan Documents and subject
to the terms hereof, Agent will take such action, assert such rights and pursue
such remedies under this Agreement and the other Loan Documents as the Majority
Banks or all of the Banks, as the case may be (as provided for hereunder), shall
direct; provided, however, that the Agent shall not be required to act or omit
to act if, in the judgment of the Agent, such action or omission may expose the
Agent to personal liability or is contrary to this Agreement, any of the other
Loan Documents or applicable law. Except as expressly provided above or
elsewhere in this Agreement or the other Loan Documents, no Bank (other than the
Agent, acting in its capacity as agent) shall be entitled to take any
enforcement action of any kind under any of the Loan Documents.

        13.13 Collateral Matters.

              (a) The Agent is authorized on behalf of all the Banks, without
the necessity of any notice to or further consent from the Banks, from time to
time to take any action with respect to any Collateral or the Collateral
Documents which may be necessary to perfect and maintain a perfected security
interest in and Liens upon the Collateral granted pursuant to the Loan
Documents.

              (b) The Banks agree to release, and hereby irrevocably authorize
the Agent to release, any Lien granted to or held by the Agent upon any
Collateral (i) upon termination of the Revolving Credit Aggregate Commitment and
payment in full of all Indebtedness payable under this Agreement and under any
other Loan Document; (ii) constituting property sold or to be sold or disposed
of as part of or in connection with any express disposition permitted hereunder;
or (iii) if approved, authorized or ratified in writing by the Majority Banks,
or all the Banks, as the case may be, as provided in Section 14.11. Upon request
by the Agent at any time, the Banks will confirm in writing the Agent's
authority to release particular types or items of Collateral pursuant to this
Section 13.13(b).

        14.   MISCELLANEOUS

        14.1 Accounting Principles. Where the character or amount of any asset
or liability or
<PAGE>   87

item of income or expense is required to be determined or any consolidation or
other accounting computation is required to be made for the purposes of this
Agreement, it shall be done, unless otherwise specified herein, in accordance
with GAAP. Furthermore, all financial statements required to be delivered
hereunder shall be prepared in accordance with GAAP.

        14.2 Consent to Jurisdiction. Company and Banks hereby irrevocably
submit to the non-exclusive jurisdiction of any United States Federal or
Michigan state court sitting in Detroit in any action or proceeding arising out
of or relating to this Agreement or any of the other Loan Documents and Company
and Banks hereby irrevocably agree that all claims in respect of such action or
proceeding may be heard and determined in any such United States Federal or
Michigan state court. Company irrevocably consents to the service of any and all
process in any such action or proceeding brought in any court in or of the State
of Michigan by the delivery of copies of such process to Company at its address
specified on the signature page hereto or by certified mail directed to such
address or such other address as may be designated by Company in a notice to the
other parties that complies as to delivery with the terms of Section 14.6.
Nothing in this Section shall affect the right of the Banks and the Agent to
serve process in any other manner permitted by law or limit the right of the
Banks or the Agent (or any of them) to bring any such action or proceeding
against Company or any Guarantor or any of its or their property in the courts
of any other jurisdiction. Company hereby irrevocably waives any objection to
the laying of venue of any such suit or proceeding in the above described
courts.

        14.3 Law of Michigan. This Agreement and the Notes have been delivered
at Detroit, Michigan, and shall be governed by and construed and enforced in
accordance with the laws of the State of Michigan. Whenever possible each
provision of this Agreement shall be interpreted in such manner as to be
effective and valid under applicable law, but if any provision of this Agreement
shall be prohibited by or invalid under applicable law, such provision shall be
ineffective to the extent of such prohibition or invalidity, without
invalidating the remainder of such provision or the remaining provisions of this
Agreement.

        14.4 Interest. In the event the obligation of Company to pay interest on
the principal balance of the Notes is or becomes in excess of the maximum
interest rate which Company is permitted by law to contract or agree to pay,
giving due consideration to the execution date of this Agreement, then, in that
event, the rate of interest applicable with respect to such Bank's Percentage
shall be deemed to be immediately reduced to such maximum rate and all previous
payments in excess of the maximum rate shall be deemed to have been payments in
reduction of principal and not of interest.

        14.5 Closing Costs and Other Costs. (a) Company agrees to pay, or
reimburse the Agent for payment of, on demand (a) all reasonable closing costs
and expenses, including, by way of description and not limitation, house and
outside reasonable attorney fees (without duplication of fees and expenses for
the same services) and advances, appraisal and accounting fees, and lien search
fees incurred by Agent in connection with the commitment, consummation and
closing of the loans contemplated hereby or in connection with the
administration of this
<PAGE>   88

Agreement or any amendment, refinancing or restructuring of the credit
arrangements provided under this Agreement, (b) all stamp and other taxes and
fees payable or determined to be payable in connection with the execution,
delivery, filing, recording or amendment of this Agreement and the Loan
Documents and the consummation of the transactions contemplated hereby, and any
and all liabilities with respect to or resulting from any delay in paying or
omitting to pay such taxes or fees, (c) all reasonable costs and expenses of the
Agent or any of the Banks (including reasonable fees and expenses of house and
outside counsel (without duplication of fees and expenses for the same services)
and whether incurred through negotiations, legal proceedings or otherwise) in
connection with any Default or Event of Default or the amendment, waiver or
enforcement of this Agreement, or the Loan Documents or in connection with any
refinancing or restructuring of the credit arrangements provided under this
Agreement and (d) all reasonable costs and expenses of the Agent or any of the
Banks (including reasonable fees and expenses of house and outside counsel) in
connection with any action or proceeding relating to a court order, injunction
or other process or decree restraining or seeking to restrain the Agent or any
of the Banks from paying any amount under, or otherwise relating in any way to,
any Letter of Credit and any and all costs and expenses which any of them may
incur relative to any payment under any Letter of Credit. All of said amounts
required to be paid by Company, may, at Agent's option, be charged by Agent as a
Prime-based Advance against the Indebtedness.

        (b)  To the extent not restricted by any financial assistance provisions
of any applicable law, Company agrees to indemnify and save Agent and each of
the Banks harmless from all loss, cost, damage, liability or expenses, including
reasonable house and outside attorneys' fees and disbursements (but without
duplication of fees and expenses for the same services), incurred by Agent and
the Banks by reason of an Event of Default, or enforcing the obligations of
Company or any Subsidiary under this Agreement or any of the other Loan
Documents or in the prosecution or defense of any action or proceeding
concerning any matter growing out of or connected with this Agreement or any of
the Loan Documents, excluding, however, any loss, cost, damage, liability or
expenses arising solely as a result of the gross negligence or willful
misconduct of the party seeking to be indemnified under this Section 14.5(b).

        (c)  Company agrees to defend, indemnify and hold harmless Agent and
each of the Banks, and their respective employees, agents, officers and
directors from and against any and all claims, demands, penalties, fines,
liabilities, settlements, damages, costs or expenses of whatever kind or nature
arising out of or related to (i) the presence, disposal, release or threatened
release of any Hazardous Materials in violation of applicable Hazardous Material
Laws on, from or affecting any premises owned or occupied by Company or any of
its Subsidiaries, (ii) any personal injury (including wrongful death) or
property damage (real or personal) arising out of or related to such Hazardous
Materials in violation of applicable Hazardous Material Laws, (iii) any lawsuit
or other proceeding brought or threatened, settlement reached or governmental
order or decree relating to such Hazardous Materials in violation of applicable
Hazardous Material Laws, (iv) the cost of removal of all Hazardous Materials
from all or any portion of any premises owned by Company or its Subsidiaries,
(v) the taking of necessary precautions to protect against the release of
Hazardous Materials in violation of
<PAGE>   89
applicable Hazardous Material Laws on or affecting any premises owned by
Company or any of its Subsidiaries, (vi) complying with all Hazardous Material
Laws in all material respects and/or (vii) any material violation of Hazardous
Material Laws, including without limitation, reasonable attorneys and
consultants fees, investigation and laboratory fees, environmental studies
required by Agent or any Bank in connection with the violation of Hazardous
Material Laws (whether before or after the occurrence of any Default or Event of
Default hereunder), court costs and litigation expenses. The obligations of
Company under this Section 14.5(c) shall be in addition to any and all other
obligations and liabilities the Company may have to Agent or any of the Banks at
common law or pursuant to any other agreement.

        14.6 Notices. Except as expressly provided otherwise in this Agreement,
all notices and other communications provided to any party hereto under this
Agreement or any other Loan Document shall be in writing and shall be given by
personal delivery, by mail, by reputable overnight courier, by telex or by
facsimile and addressed or delivered to it at its address set forth on Schedule
14.6 or at such other address as may be designated by such party in a notice to
the other parties that complies as to delivery with the terms of this Section
14.6. Any notice, if personally delivered or if mailed and properly addressed
with postage prepaid and sent by registered or certified mail, shall be deemed
given when received or when delivery is refused; any notice, if given to a
reputable overnight courier and properly addressed, shall be deemed given two
(2) Business Days after the date on which it was sent, unless it is actually
received sooner by the named addressee; and any notice, if transmitted by telex
or facsimile, shall be deemed given when received (answerback confirmed in the
case of telexes and receipt confirmed in the case of telecopies). Agent may, but
shall not be required to, take any action on the basis of any notice given to it
by telephone, but the giver of any such notice shall promptly confirm such
notice in writing or by telex or facsimile, and such notice will not be deemed
to have been received until such confirmation is deemed received in accordance
with the provisions of this Section set forth above. If such telephonic notice
conflicts with any such confirmation, the terms of such telephonic notice shall
control.

        14.7 Further Action. Company, from time to time, upon written request of
Agent will make, execute, acknowledge and deliver or cause to be made, executed,
acknowledged and delivered, all such further and additional instruments, and
take all such further action as may reasonably be required to carry out the
intent and purpose of this Agreement or the Loan Documents, and to provide for
Advances under and payment of the Notes, according to the intent and purpose
herein and therein expressed.

        14.8 Successors and Assigns; Participations; Assignments.

             (a) This Agreement shall be binding upon and shall inure to
the benefit of Company, the Agent and the Banks, and their respective successors
and assigns.

             (b) The foregoing shall not authorize any assignment by Company of
its rights or duties hereunder, and no such assignment shall be made (or
effective) without the prior written
<PAGE>   90

approval of the Banks.

             (c) Each of the Banks may at any time and from time to time,
subject to the terms and conditions hereof, assign or grant participations in
such Bank's rights and obligations hereunder and under the other Loan Documents
but only on a pro rata basis to any commercial bank, savings and loan
association, insurance company, pension fund, mutual fund, commercial finance
company or other similar financial institution, which institution is approved in
advance in writing by Agent and Company, such approval not to be unreasonably
withheld or delayed; provided, however, that (i) the approval of Company shall
not be required upon the occurrence and during the continuance of a Default or
Event of Default and (ii) the approval of Company and Agent shall not be
required for any such sale, transfer, assignment or participation by a Bank to
its Affiliate, to any other Bank or to any Federal Reserve Bank. The Company
authorizes each Bank to disclose to any prospective assignee or participant,
once approved by Company and Agent (if such approval is required), any and all
financial information in such Bank's possession concerning the Company which has
been delivered to such Bank pursuant to this Agreement; provided that each such
prospective participant shall execute a confidentiality agreement consistent
with the terms of Section 14.13, hereof.

             (d) Each assignment by a Bank of all or any portion of its rights
and obligations hereunder and under the other Loan Documents, which assignments
shall be on a pro rata basis and shall be made pursuant to an Assignment
Agreement substantially (as determined by Agent) in the form attached hereto as
Exhibit "L" (with appropriate insertions acceptable to Agent), provided however
that such Bank need not deliver any Assignment Agreement in connection with
Assignments to a Federal Reserve Bank and shall be subject to the terms and
conditions hereof, and to the following restrictions:

                         (i)        each assignment shall cover all of the Notes
                                    issued by Company hereunder, and shall be
                                    for a fixed and not varying percentage
                                    thereof, with the same percentage applicable
                                    to each such Note;

                        (ii)        each assignment shall be in a minimum amount
                                    of Five Million Dollars ($5,000,000) (or if
                                    less, the entire remaining amount of such
                                    assigning Bank's interest under this
                                    Agreement);

                       (iii)        no assignment shall be effective unless
                                    Agent has received from the assignee (or
                                    from the assigning Bank) an assignment fee
                                    of $3,500 for each such assignment.

In connection with any assignment, Company and Agent shall be entitled to
continue to deal solely and directly with the assigning Bank in connection with
the interest so assigned until (x) the Agent shall have received a notice of
assignment duly executed by the assigning Bank and an Assignment Agreement (with
respect thereto) duly executed by the assigning Bank and each assignee; and (y)
the assigning Bank shall have delivered to the Agent the original of each Note

<PAGE>   91

held by the assigning Bank under the Loan Agreements. From and after the date on
which the Agent shall notify Company and the assigning Bank that the foregoing
conditions shall have been satisfied and all consents (if any) required shall
have been given, the assignee thereunder shall be deemed to be a party to this
Agreement. To the extent that rights and obligations hereunder shall have been
assigned to such assignee as provided in such notice of assignment (and
Assignment Agreement), such assignee shall have the rights and obligations of a
Bank under this Agreement and the other Loan Documents (including without
limitation the right to receive fees payable hereunder in respect of the period
following such assignment). In addition, the assigning Bank, to the extent that
rights and obligations hereunder shall have been assigned by it as provided in
such notice of assignment (and Assignment Agreement), but not otherwise, shall
relinquish its rights and be released from its obligations under this Agreement.

Within five (5) Business Days following Company's receipt of notice from the
Agent that Agent has accepted and executed a notice of assignment and the duly
executed Assignment Agreement, Company shall, to the extent applicable, execute
and deliver to the Agent in exchange for any surrendered Note, new Note(s)
payable to the order of the assignee in an amount equal to the amount assigned
to it pursuant to such notice of assignment (and Assignment Agreement), and with
respect to the portion of the Indebtedness retained by the assigning Bank, to
the extent applicable, a new Note payable to the order of the assigning Bank in
an amount equal to the amount retained by such Bank hereunder shall be executed
and delivered by the Company. Agent, the Banks and the Company acknowledge and
agree that any such new Note(s) shall be given in renewal and replacement of the
surrendered Notes and shall not effect or constitute a novation or discharge of
the Indebtedness evidenced by any surrendered Note, and each such new Note shall
contain a provision confirming such agreement. In addition, promptly following
receipt of such Notes, Agent shall prepare and distribute to Company and each of
the Banks a revised Exhibit I to this Agreement setting forth the applicable new
Percentages of the Banks (including the assignee Bank), taking into account such
assignment.

              (e) Each Bank agrees that any participation agreement permitted
hereunder shall comply with all applicable laws and shall be subject to the
following restrictions (which shall be set forth in the applicable Participation
Agreement):

                         (i)        such Bank shall remain the holder of its
                                    Notes hereunder, notwithstanding any such
                                    participation;

                        (ii)        except as expressly set forth in this
                                    Section 14.8(e) with respect to rights of
                                    setoff and the benefits of Article 12
                                    hereof, a participant shall have no direct
                                    rights or remedies hereunder;

                       (iii)        a participant shall not reassign or
                                    transfer, or grant any sub-participations in
                                    its participation interest hereunder or any
                                    part thereof; and

<PAGE>   92

                        (iv)        such Bank shall retain the sole right and
                                    responsibility to enforce the obligations
                                    of the Company relating to the Notes and
                                    Loan Documents, including, without
                                    limitation, the right to proceed against
                                    any Guaranties, or cause Agent to do so
                                    (subject to the terms and conditions
                                    hereof), and the right to approve any
                                    amendment, modification or waiver of any
                                    provision of this Agreement without the
                                    consent of the participant, except for those
                                    matters covered by Section 14.11(a) through
                                    (d) and (g) hereof (provided that a
                                    participant may exercise approval rights
                                    over such matters only on an indirect basis,
                                    acting through such Bank, and Company, Agent
                                    and the other Banks may continue to deal
                                    directly with such Bank in connection with
                                    such Bank's rights and duties hereunder),
                                    and shall otherwise be in form satisfactory
                                    to Agent.

Company agrees that each participant shall be deemed to have the right of setoff
under Section 11.4 hereof, in respect of its participation interest in amounts
owing under this Agreement and the Loan Documents to the same extent as if the
Indebtedness were owing directly to it as a Bank under this Agreement, shall be
subject to the pro rata recovery provisions of Section 11.3 hereof, and that
each participant shall be entitled to the benefits of Article 12 hereof. The
amount, terms and conditions of any participation shall be as set forth in the
participation agreement between the issuing Bank and the Person purchasing such
participation, and none of the Company, the Agent and the other Banks shall have
any responsibility or obligation with respect thereto, or to any Person to whom
any such participation may be issued. No such participation shall relieve any
issuing Bank of any of its obligations under this Agreement or any of the other
Loan Documents, and all actions hereunder shall be conducted as if no such
participation had been granted.

              (f) Nothing in this Agreement, the Loan Documents or the Notes,
expressed or implied, is intended to or shall confer on any Person other than
the respective parties hereto and thereto and their successors and assignees and
participant permitted hereunder and thereunder any benefit or any legal or
equitable right, remedy or other claim under this Agreement, the Notes or the
other Loan Documents.

        14.9 Indulgence. No delay or failure of Agent and the Banks in
exercising any right, power or privilege hereunder shall affect such right,
power or privilege nor shall any single or partial exercise thereof preclude any
further exercise thereof, nor the exercise of any other right, power or
privilege. The rights of Agent and the Banks hereunder are cumulative and are
not exclusive of any rights or remedies which Agent and the Banks would
otherwise have.

        14.10 Counterparts. This Agreement may be executed in several
counterparts, and each executed copy shall constitute an original instrument,
but such counterparts shall together constitute but one and the same instrument.

<PAGE>   93

        14.11 Amendment and Waiver. No amendment or waiver of any provision of
this Agreement or any Loan Document, nor consent to any departure by Company
therefrom, shall in any event be effective unless the same shall be in writing
and signed by the Majority Banks (or by the Agent at the written request of the
Majority Banks) or, if this Agreement expressly so requires with respect to the
subject matter thereof, by all Banks (and, with respect to any amendments to
this Agreement or the other Loan Documents, by Company), and then such waiver or
consent shall be effective only in the specific instance and for the specific
purpose for which given; provided, however, that no amendment, waiver or consent
shall, unless in writing and signed by all the Banks, do any of the following:
(a) increase any Lender's commitments hereunder, (b) reduce the principal, or
interest or any Fees or other amounts payable hereunder, (c) postpone any date
fixed for any payment of principal, or interest, or any Fees or other amounts
payable hereunder, (d) waive any Event of Default specified in Sections 10.1(a)
hereof, (e) except as expressly permitted hereunder, or under the Collateral
Documents, release or defer the granting or perfecting of a lien or security
interest in any Collateral or release any guaranty or similar undertaking
provided by any Person except as shall be otherwise expressly permitted in this
Agreement or any other Loan Document, provided however that pursuant to Section
13.13 hereof Agent shall be entitled to release any Collateral which any
Borrower or any Subsidiary is permitted to sell or transfer under the terms of
this Agreement or the other Loan Documents without notice to or any further
action or consent of the Lenders; (f) terminate or modify any indemnity provided
to the Lenders hereunder or under the other Loan Documents, except as shall be
otherwise expressly provided in this Agreement or any other Loan Document, (g)
take any action which requires the approval or consent of all Lenders pursuant
to the terms of this Agreement or any other Loan Document, or (h) change the
definitions "Percentage", "Majority Lenders", or this Section 14.11; provided
further, that no amendment, waiver or consent shall, unless in writing signed by
the Swing Line Bank do any of the following: (x) reduce the principal of, or
interest on, the Swing Line Note or (y) postpone any date fixed for any payment
of principal of, or interest on, the Swing Line Note; and provided further,
however, that no amendment, waiver, or consent shall, unless in writing and
signed by the Agent in addition to all the Banks, affect the rights or duties of
the Agent under this Agreement or any Loan Document. All references in this
Agreement to "Banks" or "the Banks" shall refer to all Banks, unless expressly
stated to refer to Majority Banks.

        14.12 Taxes and Fees. Should any documentary, stamp or similar tax
(other than a tax based upon the net income of any Bank or Agent imposed by the
jurisdiction in which such Bank or Agent have their respective principal
executive offices), or recording or filing fee become payable in respect of this
Agreement or any of the Loan Documents (or the execution, filing or recording
thereof) or any amendment, modification or supplement hereof or thereof, Company
agrees to pay the same together with any interest or penalties thereon and
agrees to hold the Agent and the Banks harmless with respect thereto.

        14.13 Confidentiality. The Agent and each Bank agree that it will not
disclose without the prior consent of Company (other than to its employees, its
Affiliates, to Agent or another Bank or to its auditors or counsel) any
information with respect to Company, which is furnished

<PAGE>   94

pursuant to this Agreement or any of the Loan Documents; provided that Agent and
any Bank may disclose any such information (a) as has become generally available
to the public or has been lawfully obtained by Agent or such Bank from any third
party under no duty of confidentiality to Company, (b) as may be required in any
report, statement or testimony submitted to, or in respect to any inquiry, by,
any municipal, state or federal regulatory body having or claiming to have
jurisdiction over such Bank, including the Board of Governors of the Federal
Reserve System of the United States, the Office of the Comptroller of the
Currency or the Federal Deposit Insurance Corporation or similar organizations
(whether in the United States or elsewhere) or their successors, (c) as may be
required in respect to any summons or subpoena or in connection with any
litigation, (d) in order to comply with any law, order, regulation or ruling
applicable to such Bank, and (e) to any permitted transferee or assignee or to
any approved participant of, or with respect to, the Notes, as aforesaid.

        14.14 Withholding Taxes. If any Bank is not incorporated under the laws
of the United States or a state thereof, such Bank shall promptly deliver to the
Agent two executed copies of (i) Internal Revenue Service Form 1001 specifying
the applicable tax treaty between the United States and the jurisdiction of such
Bank's domicile which provides for the exemption from withholding on interest
payments to such Bank, (ii) Internal Revenue Service Form 4224 evidencing that
the income to be received by such Bank hereunder is effectively connected with
the conduct of a trade or business in the United States or (iii) other evidence
satisfactory to the Agent that such Bank is exempt from United States income tax
withholding with respect to such income. Such Bank shall amend or supplement any
such form or evidence as required to insure that it is accurate, complete and
non- misleading at all times. Promptly upon notice from the Agent of any
determination by the Internal Revenue Service that any payments previously made
to such Bank hereunder were subject to United States income tax withholding when
made, such Bank shall pay to the Agent the excess of the aggregate amount
required to be withheld from such payments over the aggregate amount actually
withheld by the Agent.

        14.15 WAIVER OF JURY TRIAL. THE BANKS, THE AGENT AND THE COMPANY AFTER
CONSULTING OR HAVING HAD THE OPPORTUNITY TO CONSULT WITH COUNSEL, KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVE ANY RIGHT ANY OF THEM MAY HAVE TO A TRIAL BY
JURY IN ANY LITIGATION BASED UPON OR ARISING OUT OF THIS AGREEMENT OR ANY
RELATED INSTRUMENT OR AGREEMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED BY THIS
AGREEMENT OR ANY COURSE OF CONDUCT, DEALING, STATEMENTS (WHETHER ORAL OR
WRITTEN) OR ACTION OF ANY OF THEM. NEITHER THE BANKS, THE AGENT, NOR COMPANY
SHALL SEEK TO CONSOLIDATE, BY COUNTERCLAIM OR OTHERWISE, ANY SUCH ACTION IN
WHICH A JURY TRIAL HAS BEEN WAIVED WITH ANY OTHER ACTION IN WHICH A JURY TRIAL
CANNOT BE OR HAS NOT BEEN WAIVED. THESE PROVISIONS SHALL NOT BE DEEMED TO HAVE
BEEN MODIFIED IN ANY RESPECT OR RELINQUISHED BY THE BANKS AND THE AGENT OR
COMPANY EXCEPT BY A WRITTEN INSTRUMENT EXECUTED BY ALL OF

<PAGE>   95

THEM.

        14.16 Complete Agreement; Conflicts. This Agreement, the Notes, any
Requests for Revolving Credit Advance and Requests for Swing Line Advance
hereunder, and the Loan Documents contain the entire agreement of the parties
hereto, superseding all prior agreements, discussions and understandings
relating to the subject matter hereof, and none of the parties shall be bound by
anything not expressed in writing. In the event of any conflict between the
terms of this Agreement and the other Loan Documents, this Agreement shall
govern.

        14.17 Severability. In case any one or more of the obligations of
Company under this Agreement, the Notes or any of the other Loan Documents shall
be invalid, illegal or unenforceable in any jurisdiction, the validity, legality
and enforceability of the remaining obligations of Company shall not in any way
be affected or impaired thereby, and such invalidity, illegality or
unenforceability in one jurisdiction shall not affect the validity, legality or
enforceability of the obligations of Company under this Agreement, the Notes or
any of the other Loan Documents in any other jurisdiction.

        14.18 Table of Contents and Headings. The table of contents and the
headings of the various subdivisions hereof are for convenience of reference
only and shall in no way modify or affect any of the terms or provisions hereof.

        14.19 Construction of Certain Provisions. If any provision of this
Agreement or any of the Loan Documents refers to any action to be taken by any
Person, or which such Person is prohibited from taking, such provision shall be
applicable whether such action is taken directly or indirectly by such Person,
whether or not expressly specified in such provision.

        14.20 Independence of Covenants. Each covenant hereunder shall be given
independent effect (subject to any exceptions stated in such covenant) so that
if a particular action or condition is not permitted by any such covenant
(taking into account any such stated exception), the fact that it would be
permitted by an exception to, or would be otherwise within the limitations of,
another covenant shall not avoid the occurrence of a Default or an Event of
Default.

        14.21 Reliance on and Survival of Various Provisions. All terms,
covenants, agreements, representations and warranties of Company or any party to
any of the Loan Documents made herein or in any of the Loan Documents or in any
certificate, report, financial statement or other document furnished by or on
behalf of Company or any Guarantor in connection with this Agreement or any of
the Loan Documents shall be deemed to have been relied upon by the Banks,
notwithstanding any investigation heretofore or hereafter made by any Bank or on
such Bank's behalf, and those covenants and agreements of Company set forth in
Sections 8.19, 12.1, 12.3, 12.4, 12.5, 12.7 and 14.5 hereof (together with any
other indemnities of Company contained elsewhere in this Agreement or in any of
the Loan Documents) and of Banks set forth in Section 13.9 hereof shall survive
the repayment in full of the Indebtedness and the
<PAGE>   96

termination of the Revolving Credit Aggregate Commitment.

        14.22 Effective Upon Execution. This Agreement shall become effective
upon the execution hereof by Banks, Agent and Company and the issuance by
Company of the Revolving Credit Notes, the Term Notes and the Swing Line Note
hereunder, and shall remain effective until the Indebtedness has been repaid and
discharged in full, all Letters of Credit have expired and no commitment to
extend any credit hereunder or under any of the other Loan Documents, whether
optional or obligatory, remains outstanding.

<PAGE>   97

         WITNESS the due execution hereof as of the day and year first above
written.

COMERICA BANK, as Agent                      MCE COMPANIES, INC.

By:    /s/ Michael P. Stapleton              By:  /s/ John L. Smucker
       ---------------------------------          ------------------------------
       Michael P. Stapleton                       John L. Smucker
Its:   Vice President                        Its: President

One Detroit Center
500 Woodward Avenue
6th Floor MC 3244
Detroit, Michigan 48226
Attention: Metropolitan Loan Division - B

BANKS:                                       COMERICA BANK

Operations Office:

Comerica Bank                                By:  /s/ Michael P. Stapleton
                                                  ------------------------------
One Detroit Center                                Michael P. Stapleton
500 Woodward Ave.                            Its: Vice President
6th Floor MC 3244
Detroit, Michigan 48226
Attention: Michael P. Stapleton
Telephone No. (313) 222-2863
Facsimile No. (313) 222-3503

                                             NATIONAL CITY BANK OF
                                             MICHIGAN/ILLINOIS

Operations Office:

                                             By:  /s/ Horst Sheriff
1001 South Worth                                  ------------------------------
Birmingham, Michigan 48009
Attention: Horst Sheriff                     Its: Vice President
Telephone No. (248) 901-1459                      ------------------------------
Facsimile No. (248) 901-2188

<PAGE>   98

                                    EXHIBIT A

                      REQUEST FOR REVOLVING CREDIT ADVANCE

No.                                            Dated:
   ----------------------                            ---------------------------

To:      Comerica Bank - Agent

Re:      Credit Agreement by and among Comerica Bank (individually and as
         Agent), the lenders from time to time parties thereto (collectively,
         "Banks"), and MCE Companies, Inc. ("Company") dated as of July 29, 1999
         (as amended from time to time, the "Agreement").

         Pursuant to the Agreement, the Company requests an Advance from Banks
         as follows:

         A.       Date of Advance:
                                  ----------------------------------------------

         B.       Amount of Advance:

                  $
                   ---------

                  | |      Comerica Bank Account No.
                                                     ------------------

                  | |      Other:
                                      ---------------------------------

         C.       Type of Activity:

                  1.       Advance                            | |
                  2.       Refunding
                           of a Revolving Credit Advance      | |
                           of a Swing Line Advance            | |
                  3.       Conversion                         | |

         D.       Interest Rate:

                  1.       Prime-based Rate                   | |
                  2.       Eurodollar-based Rate              | |

         E.       Interest Period (for Eurodollar-based Advances only):

<PAGE>   99

                  1.       One (1) Month                      | |
                  2.       Two (2) Months                     | |
                  3.       Three (3) Months                   | |
                  4.       Six (6) Months                     | |

            The Company certifies to the matters specified in Section 2.7(e) of
            the Agreement.

                                MCE COMPANIES, INC., a Michigan
                                corporation

                                By:
                                   ---------------------------------------------

                                Its:
                                    --------------------------------------------

Agent Approval:
               --------------------

<PAGE>   100

                                   EXHIBIT B

                              REVOLVING CREDIT NOTE

                                                   $              July 29, 1999
                                                    -------------

         On the Revolving Credit Maturity Date, FOR VALUE RECEIVED, MCE
Companies, Inc., a Michigan corporation ("Company") promises to pay to the order
of [insert Bank] ("Bank") care of Comerica Bank, as Agent, at 500 Woodward
Avenue, Detroit, MI 48226, in lawful money of the United States of America, the
sum of [Insert Amount derived from Percentages] Dollars ($   ), or so much of
said sum as may from time to time have been advanced and then be outstanding
hereunder pursuant to the Credit Agreement dated as of July 29, 1999, made by
and among the Company, certain banks, including the Bank, and Comerica Bank as
Agent for such banks, as the same may be amended from time to time (the
"Agreement"), together with interest thereon as hereinafter set forth.

         Each of the Advances made hereunder shall bear interest at the
Applicable Interest Rate from time to time applicable thereto under the
Agreement or as otherwise determined thereunder, and interest shall be computed,
assessed and payable as set forth in the Agreement.

         This Note is a note under which advances (including refundings and
conversions), repayments and readvances may be made from time to time, but only
in accordance with the terms and conditions of the Agreement. This Note
evidences borrowings under, is subject to, is secured in accordance with, and
may be accelerated or matured under, the terms of the Agreement, to which
reference is hereby made. Definitions and terms of the Agreement are hereby
incorporated by reference herein.

         This Note shall be interpreted and the rights of the parties hereunder
shall be determined under the laws of, and enforceable in, the State of
Michigan.

         Company hereby waives presentment for payment, demand, protest and
notice of dishonor and nonpayment of this Note and agrees that no obligation
hereunder shall be discharged by reason of any extension, indulgence, release,
or forbearance granted by any holder of this Note to any party now or hereafter
liable hereon or any present or subsequent owner of any property, real or
personal, which is now or hereafter security for this Note.

<PAGE>   101

         Nothing herein shall limit any right granted Bank by any other
instrument or by law.

                                     MCE COMPANIES, INC., a Michigan
                                     corporation

                                     By:
                                        ----------------------------------------

                                              John L. Smucker

                                     Its:     President

<PAGE>   102

                                   EXHIBIT C

                             LETTER OF CREDIT NOTICE

TO:      Members of the Bank Group

RE:      Issuance of Letter of Credit pursuant to Article 3 of the Credit
         Agreement ("Agreement") dated July 29, 1999 between MCE Companies, Inc.
         ("Company"), Agent and the Banks.

         On     ,    , (1) Agent, in accordance with Article 3 of the Agreement,
issued its Letter of Credit number      , in favor of       (2) for the account
of Company [and         ]. (3) The face amount of such Letter of Credit is $   .
The amount of participation in the Letter of Credit is as follows:(4)

         Comerica Bank                      $
                                             ------------------
                                            $
         --------------------------          ------------------
                                            $
         --------------------------          ------------------

         This notification is delivered this    day of        ,      , pursuant
to Section 3.3 of the Agreement. Except as otherwise defined, capitalized terms
used herein the meanings given them in the Agreement.

                               Signed:

                               COMERICA BANK

                               By:
                                  ----------------------------------------------

                               Its:
                                   ---------------------------------------------

--------------------------
     (1)Date of Issuance
     (2)Beneficiary
     (3)Other Account Party (i.e. Subsidiary of Company), if any
     (4)Amounts based on Percentages

<PAGE>   103

                                   EXHIBIT D

                         REQUEST FOR SWING LINE ADVANCE

No.                                         Dated:
   ----------------------                         -----------------------------

To:      Comerica Bank, Swing Line Bank

Re:      Credit Agreement by and among Comerica Bank (individually and as
         Agent), the lenders from time to time parties thereto (collectively,
         "Banks"), and MCE Companies, Inc. ("Company") dated as of July 29, 1999
         (as amended from time to time, the "Agreement").

         Pursuant to the Agreement, the Company requests a Swing Line Advance
from the Swing Line Bank as follows:

         A.       Date of Advance:
                                  ---------------------------

         B.       Amount of Advance:

                  $
                   ----------

                  [ ]      Comerica Bank Account No.
                                                     --------------

                  [ ]      Other:
                                  ---------------------------------

         C.       Interest Rate:

                  1.       Prime-based Rate                   [ ]
                  2.       Quoted Rate                        [ ]

         D.       Interest Period:

                  1.                    days(1)
                           ------------

------------------------------
     (1)Insert up to 30 days.

<PAGE>   104

         The Company certifies to the matters specified in Section 4.6(e) of the
Agreement.

                                   MCE COMPANIES, INC., a Michigan
                                   corporation

                                   By:
                                      ------------------------------------------

                                   Its:
                                       -----------------------------------------

Swing Line Bank Approval:
                         --------------------

<PAGE>   105

                                   EXHIBIT E

                                 SWING LINE NOTE

                                                        $5,000,000 July 29, 1999

         On the Revolving Credit Maturity Date, FOR VALUE RECEIVED, MCE
Companies, Inc., a Michigan corporation ("Company") promises to pay to the order
of Comerica Bank ("Bank") at 500 Woodward Avenue, Detroit, Michigan in lawful
money of the United States of America, the sum of Five Million Dollars
($5,000,000), or so much of said sum as may from time to time have been advanced
and then be outstanding hereunder pursuant to Article 4 of the Credit Agreement
dated as of July 29, 1999, executed by and among the Company, certain banks,
including the Bank, and Comerica Bank, as Agent for such banks, as the same may
be amended from time to time (the "Agreement"), together with interest thereon
as hereinafter set forth.

         The unpaid principal indebtedness from time to time outstanding under
this Note shall be due and payable on the last day of the Interest Period
applicable thereto or as otherwise set forth in the Agreement, provided that no
Swing Line Advance may mature or be payable on a day later than the Revolving
Credit Maturity Date.

         Each of the Swing Line Advances made hereunder shall bear interest at
the Prime-based Rate or the Quoted Rate from time to time applicable thereto
under the Agreement or as otherwise determined thereunder, and interest shall be
computed, assessed and payable as set forth in the Agreement.

         This Note is a note under which advances, repayments and readvances may
be made from time to time, but only in accordance with the terms and conditions
of the Agreement. This Note evidences borrowings under, is subject to, is
secured in accordance with, and may be accelerated or matured under, the terms
of the Agreement, to which reference is hereby made. Definitions and terms of
the Agreement are hereby incorporated by reference herein.

         This Note shall be interpreted and the rights of the parties hereunder
shall be determined under the laws of, and enforceable in, the State of
Michigan.

         Company hereby waives presentment for payment, demand, protest and
notice of dishonor and nonpayment of this Note and agrees that no obligation
hereunder shall be discharged by reason of any extension, indulgence, release,
or forbearance granted by any holder of this Note to any party now or hereafter
liable hereon or any present or subsequent owner of any property, real or
personal, which is now or hereafter security for this Note.

         Nothing herein shall limit any right granted Bank by any other
instrument or by law.

                                              MCE COMPANIES, INC., a Michigan
                                              corporation

                                              By:
                                                 -------------------------------
                                                    John L. Smucker

                                              Its:  President

<PAGE>   106

                                   EXHIBIT F

                                     FORM OF
                    SWING LINE LOAN PARTICIPATION CERTIFICATE

                                                                        , 19
                                                        ---------------      ---

[Name of Bank]

-------------------------

-------------------------

Ladies and Gentlemen:

         Pursuant to subsection 4.9(b) of the Credit Agreement ("Credit
Agreement") dated as of July 29, 1999, among MCE Companies, Inc., the Banks
named therein and Comerica Bank, as Agent, the undersigned hereby acknowledges
receipt from you of $   as payment for a participating interest in the following
Swing Line Advance:

         Date of Swing Line Advance:
                                      ------------------------------

         Principal Amount of Swing Line Advance:
                                                 -------------------

The participation evidenced by this certificate shall be subject to the terms
and conditions of the Credit Agreement including without limitation Section
4.9(b) thereof.

                                        Very truly yours,

                                        COMERICA BANK, as Agent

                                        By:
                                             -----------------------------------

Its:
     -----------------------------------

<PAGE>   107

                                   EXHIBIT G

                               NOTICE OF TERM RATE

         With reference to the Term Notes dated July 29, 1999 in the aggregate
original principal amount of $25,000,000 delivered by the Company to the Banks
under the Credit Agreement of July 29, 1999 by and between MCE Companies, Inc.
("Company"), Banks and Comerica Bank, as Agent for the Banks ("Agreement") and
pursuant to the Agreement, the Company hereby elects as the Applicable Interest
Rate for $       portion of such Term Notes the       (1) Rate. Such Applicable
Interest Rate shall be effected on        ,          , and the Interest Period
applicable thereto, if any, shall be              .(2)

         All capitalized terms used but not defined herein shall have the
meanings ascribed to them in the Agreement.

         Dated this        day of                     ,       .
                    ------        --------------------  ------

                                             MCE COMPANIES, INC., a Michigan
                                             corporation

                                             By:
                                                 -------------------------------

                                             Its:
                                                 -------------------------------

--------
     (1)/Insert, as applicable, "Eurodollar-based", or "Prime-based".
     (2)/Insert, as applicable, (i) if prior to the Term Loan Draw Expiration
Date, "one (1) month", "two (2) months", "three (3) months", or "six (6) months"
and (ii) if on or after the Term Loan Draw Expiration Date, "three (3) months."

<PAGE>   108

                                   EXHIBIT H

                                   TERM NOTE

                                       $                           July 29, 1999
                                         ---------------------

         FOR VALUE RECEIVED, MCE Companies, Inc., a Michigan corporation
("Company") promises to pay to the order of [insert Bank] ("Bank") at Detroit,
Michigan, care of Agent, for the account of Bank, in lawful money of the United
States of America, the principal sum of             Million Dollars ($        )
or so much of said sum as may from time to time have been advanced and then be
outstanding hereunder pursuant to the Agreement (as defined below) in lawful
money of the United States of America payable in quarterly principal
installments each in the amount set forth in Section 5.2 of the Agreement,
commencing on February 1, 2000 and on the first Business Day of May, August,
November and February thereafter until the Term Loan Maturity Date, when the
entire unpaid balance of principal and interest thereon shall be due and
payable, together with interest thereon as hereinafter set forth.

         The principal balance from time to time outstanding hereunder shall
bear interest at the Applicable Interest Rate from time to time applicable
thereto under the Agreement (as defined below) or as otherwise determined
thereunder, and interest shall be computed, assessed and payable as set forth in
the Agreement.

         This Note evidences borrowings under, is subject to, is secured in
accordance with, and may be accelerated or matured under, the terms of the
Credit Agreement as of July 29, 1999, made by and among Company, certain banks,
including the Bank, and Comerica Bank as Agent for such banks, as the same may
be amended from time to time (the "Agreement"). Definitions and terms of the
Agreement are hereby incorporated by reference herein.

         This Note shall be interpreted and the rights of the parties hereunder
shall be determined under the laws of, and enforceable in, the State of
Michigan.

         Company hereby waives presentment for payment, demand, protest and
notice of dishonor and nonpayment of this Note and agrees that no obligation
hereunder shall be discharged by reason of any extension, indulgence, release,
or forbearance granted by any holder of this Note to any party now or hereafter
liable hereon or any present or subsequent owner of any property, real or
personal, which is now or hereafter security for this Note.

         Nothing herein shall limit any right granted Bank by any other
instrument or by law.

                                             MCE COMPANIES,, INC., a Michigan
                                             corporation

                                             By:
                                                --------------------------------
                                                      John L. Smucker

                                             Its:     President

<PAGE>   109

                                   EXHIBIT I

                                  PERCENTAGES
<TABLE>
<CAPTION>
      Bank                                              Percentage
      ----                                              ----------

<S>                                                     <C>
Comerica Bank                                             59.46%

National City Bank of
 Michigan/Illinois                                        40.54%
                                                          ------
                                                            100%
</TABLE>

<PAGE>   110

                                  EXHIBIT "J"

                                 PENSION PLANS

None.

<PAGE>   111

                                   EXHIBIT K

                           COVENANT COMPLIANCE REPORT

To:      Comerica Bank, as Agent

         Re:      Credit Agreement dated as of July 29, 1999 (the "Agreement")

         This Covenant Compliance Report ("Report") is furnished pursuant to
Section 8.2 of the Agreement and sets forth various information as of   ,
(the "Computation Date").

         1.       Consolidated Adjusted Net Worth. On the Computation Date, the
Consolidated Adjusted Net Worth, which is required to be not less than $       ,
was $            as computed in the supporting documents attached hereto as
Schedule 1.

         2.       Total Debt to EBITDA Ratio. On the Computation Date, the Total
Debt to EBITDA Ratio, which is required to be not more than       to 1.0, was
       to 1.0 as computed in the supporting documents attached hereto as
Schedule 2.

         3.       Fixed Charge Coverage Ratio. On the Computation Date, the
Fixed Charge Coverage Ratio, which is required to be not less than           to
1.0, was       to 1.0 as computed in the supporting documents attached hereto as
Schedule 3.

         4.       Senior Debt to EBITDA Ratio.  On the Computation Date, the
Senior Debt to EBITDA Ratio, which is required to be not more than           to
1.0, was             to 1.0 as computed in the supporting documents attached
hereto as Schedule 4.

         The undersigned officer of Company hereby certifies that:

         A.       To the best of the undersigned officer's knowledge, all of the
information set forth in this Report (and in any Schedule attached hereto) is
true and correct in all material respects.

         B.       To the best of the undersigned officer's knowledge, as of the
Computation Date, the Company has observed and performed all of its covenants
and other agreements contained in the Agreement and in the Notes and any other
Loan Documents to be observed, performed and satisfied by them.

         C.       I have reviewed the Agreement and this Report is based on an
examination sufficient to assure that this Report is accurate.

         D.       To the best of the undersigned officer's knowledge, except as
stated in Schedule 5

<PAGE>   112

hereto (which shall describe any existing Default or Event of Default and the
notice and period of existence thereof and any action taken with respect thereto
or contemplated to be taken by Company), no Default or Event of Default has
occurred and is continuing on the date of this Report.

         Capitalized terms used in this Report and in the schedules hereto,
unless specifically defined to the contrary, have the meanings given to them in
the Agreement.

         IN WITNESS WHEREOF, Company has caused this Report to be executed and
delivered by its duly authorized officer this        day of                   ,
    .

                                             MCE COMPANIES, INC., a Michigan
                                             corporation

By:
    ------------------------------

Its:
    ------------------------------

<PAGE>   113
                                   EXHIBIT L

                                     FORM OF
                              ASSIGNMENT AGREEMENT

                                                                           Date:

To:      MCE Companies, Inc.

                  and

         Comerica Bank ("Agent")

Re:      MCE Companies, Inc. Credit Agreement dated as of July 29, 1999 (as
         amended or otherwise modified from time to time, the "Credit
         Agreement"), among MCE Companies, Inc. ("Company"), Comerica Bank in
         its capacity as agent for the Banks ("Agent") and certain Bank

Ladies and Gentlemen:

         Reference is made to Sections 14.8(c) and (d) of the Credit Agreement.
Unless otherwise defined herein or the context otherwise requires, all initially
capitalized terms used herein without definition shall have the meanings
specified in the Credit Agreement.

         This Agreement constitutes notice to each of you of the proposed
assignment and delegation by [insert assignor Bank] (the "Assignor") to [insert
proposed assignee] (the "Assignee"), and the Assignor hereby sells and assigns
to the Assignee, and the Assignee hereby purchases and assumes from the
Assignor, effective on the "Effective Date" (as hereafter defined) that
undivided interest in each of Assignor's rights and obligations under the Credit
Agreement and the other Loan Documents equal to    % of the Revolving Credit
(and participations in any outstanding Letters of Credit) and of the Term Loan
such that, after giving effect to the foregoing assignment and assumption, [and
the other assignments by Assignor to             on the date hereof,] the
Assignee's interest and the Assignor's remaining interest in the Revolving
Credit (and participations in any outstanding Letters of Credit) and Term Loan
shall be as set forth on the attached schedule.

         The Assignor hereby instructs the Agent to make all payments from and
including the Effective Date hereof in respect of the interest assigned hereby,
directly to the Assignee. The Assignor and the Assignee agree that all interest
and fees accrued up to, but not including, the Effective Date of the assignment
and delegation being made hereby are the property of the Assignor, and not the
Assignee. The Assignee agrees that, upon receipt of any such interest or

<PAGE>   114

fees accrued up to the Effective Date, the Assignee will promptly remit the same
to the Assignor.
         The Assignee hereby confirms that it has received a copy of the Credit
Agreement and the exhibits and schedules referred to therein, and all other Loan
Documents which it considers necessary, together with copies of the other
documents which were required to be delivered under the Credit Agreement as a
condition to the making of the loans thereunder. The Assignee acknowledges and
agrees that it: (a) is legally authorized to enter into this Assignment
Agreement; (b) has made and will continue to make such inquiries and has taken
and will take such care on its own behalf as would have been the case had its
Percentages been granted and its loans been made directly by such Assignee to
any of the Borrowers without the intervention of the Agent, the Assignor or any
other Bank; and (c) has made and will continue to make, independently and
without reliance upon the Agent, the Assignor or any other Bank, and based on
such documents and information as it has deemed appropriate, its own credit
analysis and decisions relating to the Credit Agreement. The Assignee further
acknowledges and agrees that neither the Agent nor the Assignor has made any
representations or warranties about the creditworthiness of any of the Borrowers
or any other party to the Credit Agreement or any other of the Loan Documents,
or with respect to the legality, validity, sufficiency or enforceability of the
Credit Agreement, or any other of the Loan Documents. This assignment shall be
made without recourse to or warranty by the Assignor, except as set forth
herein.

         Assignee represents and warrants that it is a Person to which
assignments are permitted pursuant to Section 14.8(c) of the Credit Agreement.

         Assignor represents and warrants, as of the Effective Date, that it is
the legal and beneficial owner of the interest being assigned and delegated by
it hereunder and that such interest is free and clear of any pledge, encumbrance
or other adverse claim or interest created by Assignor.

         Except as otherwise provided in the Credit Agreement, effective as of
the Effective Date:

         (a)      the Assignee: (i) shall be deemed automatically to have become
                  a party to the Credit Agreement and the other Loan Documents,
                  to have assumed all of the Assignor's obligations thereunder
                  to the extent of the Assignee's Percentage referred to in the
                  second paragraph of this Assignment Agreement, and to have all
                  the rights and obligations of a party to the Credit Agreement
                  and the other Loan Documents, as if it were an original
                  signatory thereto to the extent specified in the second
                  paragraph hereof; and (ii) agrees to be bound by the terms and
                  conditions set forth in the Credit Agreement and the other
                  Loan Documents as if it were an original signatory thereto;
                  and

         (b)      the Assignor's obligations under the Credit Agreement and the
                  other Loan Documents shall be reduced by the percentage
                  assigned to Assignee referred to in the second paragraph of
                  this Assignment Agreement.

<PAGE>   115
         As used herein, the term "Effective Date" means the date on which all
of the following have occurred or have been completed, as reasonably determined
by the Agent:
         (1)      the delivery to the Agent of an original of this Assignment
                  Agreement executed by the Assignor and the Assignee;

         (2)      the payment to the Agent, of all accrued fees, expenses and
                  other items for which reimbursement is then owing under the
                  Credit Agreement;

         (3)      the payment to the Agent of the $3,500 processing fee referred
                  to in Section 13.4(d) (iii) of the Credit Agreement; and

         (4)      all other restrictions and items noted in Sections 14.8(c) and
                  (d) of the Credit Agreement have been completed.

         Following the execution and delivery of this Assignment Agreement by
the Assignor and Assignee to the Agent, the Agent shall notify the Assignor and
the Assignee, along with the Borrowers of the Effective Date.

         On the Effective Date the Assignee shall pay to the Assignor the amount
agreed upon with respect to the outstanding principal amount of the outstanding
Advances of the Revolving Credit and of the Term Loan owed to Assignor by
Company under the Credit Agreement in respect of the interest being assigned
hereby.

         The Assignee has delivered to the Agent (or is delivering to the Agent
concurrently herewith) the tax forms referred to in Section 14.13 of the Credit
Agreement, and other forms reasonably requested by the Agent. The Assignor has
delivered to the Agent (or is delivering to Agent concurrently herewith), the
original of each Note (if any issued) held by the Assignor under the Credit
Agreement.

                                      * * *

                      Signatures follow on succeeding pages
         Please evidence your consent to and acceptance of the proposed
assignment and delegation set forth herein by signing and returning counterparts
hereof to the Assignor and the Assignee.

                                            [ASSIGNOR]

                                            By:
                                               ---------------------------------

                                            Its:
                                                --------------------------------
<PAGE>   116

                                            [ASSIGNEE]

                                            By:
                                               ---------------------------------

                                            Its:
                                                --------------------------------

ACCEPTED AND CONSENTED TO
this      day of        ,
     ----        ------- -------

COMERICA BANK, Agent

By:
   -------------------------------

Its:
    ------------------------------

MCE COMPANIES, INC.

By:
   -------------------------------

Its:
    ------------------------------

[This form of Assignment Agreement (including footnotes) is subject in all
respects to the terms and conditions of the Credit Agreement which shall govern
in the event of any inconsistencies or omissions.]

<PAGE>   117
                                   EXHIBIT M

                          FORM OF BORROWING BASE REPORT

                                 [See Attached]

<PAGE>   118
                                   EXHIBIT N

                                FORM OF GUARANTY

                                 [See Attached]

<PAGE>   119
                                   EXHIBIT O

                     FORM OF REQUEST FOR TERM LOAN ADVANCE

<PAGE>   120

                                   SCHEDULE 1

                                 PRICING MATRIX
<TABLE>
<CAPTION>
      Basis for Pricing                   Level I                 Level II                 Level III                Level IV
===================================================================================================================================
<S>                                <C>                         <C>                     <C>                       <C>
Senior Debt to EBITDA Ratio        Less than 2.0 to 1.0        Greater than or          Greater than or          Greater than or
                                                                equal to 2.0            equal to 2.5 to             equal to
                                                                 to 1.0 and              1.0 and less              3.0 to 1.00
                                                                less than 2.5           than 3.0 to 1.0
                                                                   to 1.0
-----------------------------------------------------------------------------------------------------------------------------------
Revolving Credit:                        1.50%                    2.0%                     2.50%                     3.0%
   Eurodollar Margin
      Prime-based Margin                    0%                      0%                      .25%                     .50%
-----------------------------------------------------------------------------------------------------------------------------------
Term Loan:                                2.0%                   2.50%                      3.0%                    3.50%
   Eurodollar Margin
-----------------------------------------------------------------------------------------------------------------------------------
      Prime-Based Margin                    0%                    .25%                      .75%                    1.25%
=============================================================================================================----------------------
          Applicable L/C                 1.50%                    2.0%                     2.50%                     3.0%
          Fee Percentage
===================================================================================================================================
   Applicable Commitment                  .50%                    .50%                      .50%                     .50%
          Fee Percentage
===================================================================================================================================
</TABLE>

<PAGE>   121
                                   SCHEDULE 2

                           EXISTING LETTERS OF CREDIT

1.       Letter of Credit issued for the account of KDI/Triangle Corporation in
         favor of 31 Forinella Drive Realty Associates, LLC in the stated amount
         of $150,000 with an expiry date of March 31, 2000.

2.       Letter of Credit issued for the account of Weinschel Corporation in
         favor of Manekin - 270 Associates Limited Partnership in the stated
         amount of $14,559.94 with an expiry date of March 1, 2000.

<PAGE>   122
                                   SCHEDULE 3

Telefonaktiebolaget LM Ericsson
Nokia Corporation
Robert Bosch GmbH
Siemens AG
FOREM S.p.a.

<PAGE>   123
                                  SCHEDULE 3.11

                        FORM OF LETTER OF CREDIT ADDENDUM

         LETTER OF CREDIT ADDENDUM (the "Addendum") dated July 29, 1999, to the
MCE Companies, Inc. Credit Agreement dated as of July 29, 1999 (as amended or
otherwise modified from time to time, the "Credit Agreement"), among MCE
Companies, Inc., ("Company"), each of the financial institutions party thereto
(collectively, the "Banks") and Comerica Bank, as Agent for the Banks.

                              W I T N E S S E T H:

         WHEREAS, the Credit Agreement provides in Article 3 thereof that the
Agent may issue Letters of Credit for the account of an Account Party;

         WHEREAS, the Company has requested that the Agent issue for the account
of the Company a Letter of Credit denominated in British Pounds Sterling
("Pounds Sterling"); and

         WHEREAS, the Agent is willing to issue such Letter of Credit, subject
to the terms and conditions of the Credit Agreement except as specifically set
forth herein.

         NOW, THEREFORE, the undersigned hereby agrees as follows:

         1. Subject to the terms and conditions of the Credit Agreement and this
Addendum, Agent may through its Issuing Office, on or after the Effective Date,
upon the written request of an Account Party accompanied by a duly executed
Letter of Credit Agreement and such other documentation related to the requested
Letter of Credit as the Agent may reasonably require, issue a Letter of Credit
denominated in Sterling (the "Foreign Currency L/C") for the account of such
Account Party, in an initial face amount of Two Hundred Thousand Pounds Sterling
((pound)200,000). In the event of any conflict between this Addendum and the
Credit Agreement, this Addendum shall control.

         2. Subject to the terms and conditions of the Credit Agreement and this
Addendum, the Company may, upon written request to the Agent, request that the
Foreign Currency L/C be reissued, extended or otherwise amended, such amendment,
if approved by the Agent, to be effective on the last day of the fiscal quarter
during which such request is received.

         3. The value in Dollars of the undrawn amount of the Foreign Currency
L/C and of all Reimbursement Obligations in connection with the Foreign Currency
L/C (the "Dollar Equivalent Amount"), for all purposes under the Credit
Agreement, including but not limited to

<PAGE>   124
Sections 2.7, 2.11, 2.12, 2.13, 3.2, 3.6 and 4.6, shall be the amount of Dollars
that may be purchased with such amount of Pounds Sterling in the interbank
foreign exchange market at the most favorable spot rate of exchange (including
all related costs of conversion) applicable to the relevant transaction
determined by the Agent to be available to it at or about 11:00 a.m. Detroit
time on the date on which such calculation would be necessary for the delivery
of Dollars at the applicable time.

         3. So long as no Default or Event of Default has occurred and is
continuing, the Dollar Equivalent Amount of the Foreign Currency L/C shall be
calculated as of the date of issuance of such Foreign Currency L/C, on each
request for Advance or issuance of a Letter of Credit under the Credit Agreement
and on the last day of each calendar quarter ending after the issuance of such
foreign Currency L/C (after giving effect to any increase or decrease in the
face amount thereof). Upon the occurrence and during the continuance of any
Default or Event of Default, compliance with this Paragraph 3, shall be tested
on a daily or other basis satisfactory to the Agent in its sole discretion.

         4. All payments by the Company in respect of the Foreign Currency L/C,
other than Letter of Credit Fees pursuant to Sections 3.4 and 3.5 which shall be
payable in Dollars, shall be payable in Pounds Sterling. The obligation of the
Company and of any Account Party to make payments in respect of the Foreign
Currency L/C in Pounds Sterling shall not be discharged or satisfied by any
tender, or any recovery pursuant to any judgment, which is expressed in or
converted into any other currency, except to the extent that such tender or
recovery shall result in the actual receipt by each of the Banks of the full
amount of Pounds Sterling expressed to be payable herein. The Agent shall, using
all amounts obtained or received from the Company and/or the applicable Account
Party pursuant to any such tender or recovery in payment of principal of and
interest on the outstanding Advances, promptly purchase Pounds Sterling at the
most favorable spot exchange rate determined by the Agent to be available to it.
The obligation of the Company or the applicable Account Party to make payments
in Pounds Sterling shall be enforceable as an alternative or additional cause of
action solely for the purpose of recovering in Pounds Sterling the amount, if
any, by which such actual receipt shall fall short of the full amount of Pounds
Sterling expressed to be payable herein.

         5. Pursuant to Section 3.6 of the Credit Agreement, in the event that
the Agent shall honor a draft or other demand for payment presented or made
under the Foreign Currency L/C, and the Company or the applicable Account Party
fails to reimburse the Agent for the amount of such draw as provided in
paragraph 4 above and any expenses paid or incurred by the Agent relative
thereto (the "Draw Amount"), then upon such payment by the Agent, the Company or
the applicable Account Party shall be deemed on such day to have elected to
substitute for its reimbursement obligation, a Prime-based Advance of the
Revolving Credit in an amount equal to the Dollar Equivalent Amount of the Draw
Amount for the account of the Banks, and each Bank shall make its Percentage of
such Prime-based Advance available to the Agent available in Dollars and in
immediately available funds at the principal office of the Agent for the Account
of the Agent.

<PAGE>   125
         6. Terms defined in the Credit Agreement and not otherwise defined
herein shall have their defined meanings when used herein.

         IN WITNESS WHEREOF, the undersigned have caused this Letter of Credit
Addendum to be executed and delivered by a duly authorized officer on the date
first above written.

                                       COMERICA BANK, as Agent

                                       By:
                                          --------------------------------------
                                              Michael P. Stapleton

                                       Title: Vice President

                                       MCE COMPANIES, INC.

                                       By:
                                          --------------------------------------
                                              John L. Smucker

                                       Title: President

<PAGE>   126
                                  SCHEDULE 7.4

                        EXCEPTIONS TO LITIGATION COVENANT

<PAGE>   127
                                  SCHEDULE 7.5

                        ADDITIONAL PERMITTED ENCUMBRANCES

<PAGE>   128
                                  SCHEDULE 7.10

                       SUBSIDIARIES (DOMESTIC AND FOREIGN)

<PAGE>   129
                                  SCHEDULE 7.11

                   EXCEPTIONS TO COMPLIANCE WITH LAW COVENANT

<PAGE>   130
                                  SCHEDULE 7.16

                              EXISTING INDEBTEDNESS

<PAGE>   131
                                  SCHEDULE 7.18

                                 CAPITALIZATION
                       (For Company and all Subsidiaries)

<TABLE>
<CAPTION>
                                                                   NO. ISSUED AND
                                           NO.                       OUTSTANDING
            NAME                       AUTHORIZED                      SHARES                        HELD BY
                                         SHARES
----------------------------------------------------------------------------------------------------------------
<S>                                    <C>                         <C>                               <C>
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   132
                       AMENDMENT NO. 1 TO CREDIT AGREEMENT

         This Amendment No. 1 to Credit Agreement ("Amendment") dated as of
September 30, 1999 by and among the lenders signatories hereto ("Banks"),
Comerica Bank as agent for the Banks (in such capacity, "Agent"), and MCE
Companies, Inc., a Michigan corporation ("Company").

                                    RECITALS
         A.       Company and Banks entered into that certain Credit Agreement
dated as of July 29, 1999 ("Agreement").

         B.       The parties desire to amend the Agreement.

         NOW, THEREFORE, the parties agree that the Agreement is amended as
follows:

         1.       The definition of "EBITDA Adjustment" set forth in Section 1
of the Agreement is amended to read as follows:

                  "EBITDA Adjustment" shall mean (i) if the date of
         determination is September 30, 1999, that portion of actual
         Consolidated EBITDA attributable to MCE Europe, Inc. divided by 2 then
         multiplied by 10, (ii) if the date of determination is December 31,
         1999, that portion of actual Consolidated EBITDA attributable to MCE
         Europe, Inc. divided by 5 then multiplied by 7, (iii) if the date of
         determination is March 31, 2000, that portion of actual Consolidated
         EBITDA attributable to MCE Europe, Inc. divided by 8 then multiplied by
         4, (iv) if the date of determination is June 30, 2000, that portion of
         actual Consolidated EBITDA attributable to MCE Europe, Inc. divided by
         11 then multiplied by 1 and (v) if the date of determination is after
         June 30, 2000, $ 0."

         2.       Company hereby represents and warrants that, after giving
effect to the amendments contained herein, (a) execution, delivery and
performance of this Amendment and any other documents and instruments required
under this Amendment or the Agreement are within Company's powers, have been
duly authorized, are not in contravention of law or the terms of the Company's
Articles of Incorporation or Bylaws and do not require the consent or approval
of any governmental body, agency, or authority; and this Amendment and any other
documents and instruments required under this Amendment or the Agreement, will
be valid and binding in accordance with their terms; (b) the representations and
warranties of Company set forth in Sections 7.1 through 7.6 and 7.8 through 7.22
of the Agreement are true and correct in all material respects on and as of the
date hereof with the same force and effect as if made on and as of the date
hereof; (c) the representations and warranties of Company set forth in Section
7.7 of the Agreement are true and correct in all material respects on and as of
the date hereof with the same force and effect as if made on and as of the date
hereof; (c) the representations and warranties of Company set forth in Section
7.7 of

<PAGE>   133

the Agreement are true and correct in all material respects as of the
date hereof with respect to the most recent financial statements furnished to
the Bank by Company in accordance with Section 8.1 of the Agreement; and (d) no
Event of Default, or condition or event which, with the giving of notice or the
running of time, or both, would constitute an Event of Default under the
Agreement, has occurred and is continuing as of the date hereof.

         3.       This Amendment may be signed in any number of counterparts,
each of which when so executed and delivered shall be deemed an original, but
all such counterparts together shall constitute but one and the same instrument.

                  WITNESS the due execution hereof as of the day and year first
above written.

COMERICA BANK, as Agent              MCE COMPANIES, INC.

By: /s/ Scottie S. Knight            By:      /s/ John L. Smucker
   ---------------------------                ----------------------------------
                                              John L. Smucker

Its: Vice President                  Its: President
    --------------------------

BANKS:                               COMERICA BANK

                                     By: /s/ Scottie S. Knight
                                        ----------------------------------------

                                     Its: Vice President
                                         ---------------------------------------

                                     NATIONAL CITY BANK OF
                                     MICHIGAN/ILLINOIS

                                     By:  /s/ Horst Sheriff
                                        ----------------------------------------

                                     Its: Vice President
                                         ---------------------------------------

<PAGE>   134
                       AMENDMENT NO. 2 TO CREDIT AGREEMENT

         This Amendment No. 2 to Credit Agreement ("Amendment") dated as of
December 31, 1999 by and among the lenders signatories hereto ("Banks"),
Comerica Bank as agent for the Banks (in such capacity, "Agent"), and MCE
Companies, Inc., a Michigan corporation ("Company").

                                                     RECITALS
         A.       Company and Banks entered into that certain Credit Agreement
dated as of July 29, 1999, as amended by Amendment No. 1 to Credit Agreement
dated as of September 30, 1999 ("Agreement").

         B.       The parties desire to further amend the Agreement.

         NOW, THEREFORE, the parties agree that the Agreement is amended as
follows:

         1.       Section 1 of the Agreement is amended to add the following
definition of "Breakeven Adjustment" in alphabetical order and to amend the
definition of Consolidated EBITDA in its enitrety as follows:

                  "Breakeven Adjustment" shall mean (i) if the date of
         determination is December 31, 1999, $1,000,000, (ii) if the date of
         determination is March 31, 2000, $1,000,000, (iii) if the date of
         determination is June 30, 2000, $1,000,000, (iv) if the date of
         determination is September 30, 2000, $500,000 and (v) if the date of
         determination is after September 30, 2000, $0.

                   "Consolidated EBITDA" shall mean for any period of
         determination, Consolidated Net Income for such period, less the
         aggregate amounts included in determining Consolidated Net Income for
         extraordinary gains during such period, plus the aggregate amounts
         deducted in determining Consolidated Net Income in respect of (a)
         income taxes for such period, (b) interest expense for such period, (c)
         depreciation and amortization expense and other non-cash charges for
         such period, and (d) extraordinary losses for such period, in each case
         determined on a Consolidated basis in accordance with GAAP, plus the
         EBITDA Adjustment, plus the Breakeven Adjustment."

         2.       Company hereby represents and warrants that, after giving
effect to the amendments contained herein, (a) execution, delivery and
performance of this Amendment and any other documents and instruments required
under this Amendment or the Agreement are within Company's powers, have been
duly authorized, are not in contravention of law or the

<PAGE>   135

terms of the Company's Articles of Incorporation or Bylaws and do not require
the consent or approval of any governmental body, agency, or authority; and this
Amendment and any other documents and instruments required under this Amendment
or the Agreement, will be valid and binding in accordance with their terms; (b)
the representations and warranties of Company set forth in Sections 7.1 through
7.6 and 7.8 through 7.22 of the Agreement are true and correct in all material
respects on and as of the date hereof with the same force and effect as if made
on and as of the date hereof; (c) the representations and warranties of Company
set forth in Section 7.7 of the Agreement are true and correct in all material
respects as of the date hereof with respect to the most recent financial
statements furnished to the Bank by Company in accordance with Section 8.1 of
the Agreement; and (d) no Event of Default, or condition or event which, with
the giving of notice or the running of time, or both, would constitute an Event
of Default under the Agreement, has occurred and is continuing as of the date
hereof.

         3.       This Amendment may be signed in any number of counterparts,
each of which when so executed and delivered shall be deemed an original, but
all such counterparts together shall constitute but one and the same instrument.

                  WITNESS the due execution hereof as of the day and year first
above written.

COMERICA BANK, as Agent                  MCE COMPANIES, INC.

By:   /s/ Scottie S. Knight                   By:   /s/ John L. Smucker
      -----------------------                       -----------------------
      Scottie S. Knight                             John L. Smucker

Its: Vice President                           Its: President

BANKS:                                        COMERICA BANK

                                              By:   /s/ Scottie S. Knight
                                                    ---------------------------

                                              Its:  Vice President
                                                    ---------------------------

                                               NATIONAL CITY BANK OF
                                               MICHIGAN/ILLINOIS

                                               By:  /s/ Horst Sheriff
                                                    ---------------------------

                                               Its: Vice President
                                                    ---------------------------

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