Document:

<PAGE>   1

                                                                     EXHIBIT 4.2

                                DOVER CORPORATION

                              Officers' Certificate

              David S. Smith, Vice President Finance, and Robert G. Kuhbach,
Vice President, General Counsel and Secretary, of Dover Corporation, a Delaware
corporation (the "Company"), each hereby certifies that he is duly authorized
to, and does hereby, deliver this certificate to Bank One Trust Company, N.A.
(the "Trustee"), as Trustee under the Indenture, dated as of February 8, 2001,
between the Company and the Trustee (the "Indenture"), relating to the Company's
6.50% Notes due February 15, 2011 (the "Notes"); that the Notes are hereby
established as a series of Securities to be issued under the Indenture; that
attached hereto at Exhibit 1 are the terms of the Notes as established in a
Board Resolution pursuant to Section 301 of the Indenture and that:

(i)    He is familiar with the Indenture and has read all the conditions
(including all definitions relating thereto) set forth therein for the
authentication and delivery of the Notes;

(ii)   He has examined the documents submitted by the Company to the Trustee
relating to the Notes and certain other corporate documents and records;

(iii)  He has made such examination or investigation as is necessary to enable
him to express an informed opinion as to whether all conditions precedent
provided in the Indenture for the authentication and delivery of the Notes have
been complied with; and

(iv)   In his opinion, all conditions precedent provided for in the Indenture
relating to the authentication and delivery of the Notes have been complied
with.

       Any capitalized terms used herein without definition shall have the
meaning assigned to them in the Indenture.

<PAGE>   2

       IN WITNESS WHEREOF, the undersigned have executed this certificate this
12 day of February 2001.

                                                /s/ David S. Smith
                                                --------------------------------
                                                Name:  David S. Smith
                                                Title: Vice President Finance

                                                /s/ Robert G. Kuhbach
                                                --------------------------------
                                                Name:  Robert G. Kuhbach
                                                Title: Vice President, General
                                                       Counsel and Secretary

<PAGE>   3

                                  EXHIBIT 1 TO
                              OFFICERS' CERTIFICATE

1.     The titles of the series of Securities referred to as the Notes shall be
       the "6.50% Notes due February 15, 2011".

2.     The aggregate principal amount of Notes that may be authenticated and
       delivered under the Indenture is initially limited to $400,000,000,
       except for Notes authenticated and delivered upon registration of
       transfer of, or in exchange for, or in lieu of, other Notes pursuant to
       Sections 304, 305, 306 or 906 of the Indenture and except for Notes that,
       pursuant to Section 303 of the Indenture, are deemed never to have been
       authenticated and delivered; (provided, however, that the Company may
       from time to time, without the consent of existing note holders, create
       and issue further notes having the same terms and conditions as the Notes
       in all respects, except for issue date, issue price and the first payment
       of interest thereon; such additional notes, at the Company's
       determination and in accordance with the provisions of the Indenture, are
       to be consolidated with and form a single series with the previously
       outstanding Notes).

3.     The maturity date on which the principal of each of the Notes is payable
       shall be February 15, 2011.

4.     The Notes shall bear interest at the rate of 6.50% per annum from
       February 12, 2011.

5.     The Interest Payment Dates for the Notes shall be February 15 and August
       15 of each year, commencing August 15, 2001, and the Regular Record Date
       for any Interest Payment Date shall be the February 1 or August 1, as the
       case may be, next preceding such Interest Payment Date.

6.     Payments of the principal of (and premium, if any) and interest on the
       Notes will be made at the office or agency of the Company maintained for
       that purpose in New York, New York, provided that at the option of the
       Company payment of interest may be made by check mailed to the address of
       the Person entitled thereto as such address shall appear in the Security
       Register for the Notes.

7.     The Notes shall be redeemable, in whole or in part, at the Company's
       option at any time at a redemption price equal to the greater of (i) 100%
       of the principal amount of such Notes, and (ii) as determined by the
       Quotation Agent (as defined below), the sum of the present values of the
       remaining scheduled payments of principal and interest thereon (not
       including any portion of such payments of interest accrued as of the date
       of redemption) discounted to the date of redemption on a semi-annual
       basis (assuming a 360-day year consisting of twelve 30-day months) at the
       Adjusted Treasury Rate (as defined below) plus 20 basis points plus, in
       each case, accrued interest thereon to the date of redemption.

<PAGE>   4

       For purposes of this clause 7, the following definitions shall apply:

       "Adjusted Treasury Rate" shall mean, with respect to any redemption date,
       the rate per annum equal to the semi-annual equivalent yield to maturity
       of the Comparable Treasury Issue, assuming a price for the Comparable
       Treasury Issue (expressed as a percentage of its principal amount) equal
       to the Comparable Treasury Price for such redemption date.

       "Comparable Treasury Issue" shall mean the United States Treasury
       security selected by the Quotation Agent as having a maturity comparable
       to the remaining term of the Notes to be redeemed that would be utilized,
       at the time of selection and in accordance with customary financial
       practice, in pricing new issues of corporate debt securities of
       comparable maturity to the remaining term of such Notes.

       "Comparable Treasury Price" shall mean, with respect to any redemption
       date, (i) the average of the Reference Treasury Dealer Quotations for
       such redemption date, after excluding the highest and lowest such
       Reference Treasury Dealer Quotations, or (ii) if the trustee obtains
       fewer than three such Reference Treasury Dealer Quotations, the average
       of all such Quotations.

       "Quotation Agent" shall mean the Reference Treasury Dealer appointed by
       the Company.

       "Reference Treasury Dealer" shall mean (i) each of Chase Securities Inc.,
       Deutsche Banc Alex. Brown Inc., and their respective successors and three
       other nationally recognized investment banking firms that are Primary
       Treasury Dealers specified from time to time by the Company; provided,
       however, that if the foregoing shall cease to be a primary U.S.
       Government securities dealer in New York City (a "Primary Treasury
       Dealer"), the Company shall substitute therefor another Primary Treasury
       Dealer; and (ii) any other Primary Treasury Dealer selected by the
       Company.

       "Reference Treasury Dealer Quotations" shall mean with respect to each
       Reference Treasury Dealer and any redemption date, the average, as
       determined by the Company, of the bid and asked prices for the Comparable
       Treasury Issue (expressed in each case as a percentage of its principal
       amount) quoted in writing to the trustee by such Reference Treasury
       Dealer at 5:00 p.m., New York City time, on the third business day
       preceding such redemption date.

8.     The Notes shall not be subject to any sinking fund or analogous
       provisions.

9.     The provisions on defeasance and covenant defeasance in Sections 1302 and
       1303 of the Indenture shall apply to the Notes.

<PAGE>   5

10.    The Notes shall be issued in the form of one or more Global Securities.
       The Depository for such Global Securities shall be The Depository Trust
       Company. The Notes shall bear, in addition to any applicable legend set
       forth in the Indenture, a legend in the following form:

              "Unless this certificate is presented by an authorized
              representative of The Depository Trust Company, a New York
              corporation ("DTC"), to the Issuer or its agent for registration
              of transfer, exchange or payment, and any certificate issued is
              registered in the name of Cede & Co. or in such other name as is
              requested by an authorized representative of DTC (and any payment
              is made to Cede & Co. or to such other entity as is requested by
              an authorized representative of DTC), ANY TRANSFER, PLEDGE OR
              OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS
              WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has
              an interest herein."<PAGE>   1

                                                                     EXHIBIT 4.3

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A
SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE
REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE
THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

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

                                DOVER CORPORATION

                        6.50% Notes due February 15, 2011

                                                              CUSIP: 260003 AD 0

No.   R-1                                                          $ 400,000,000

       Dover Corporation, a corporation duly organized and existing under the
laws of Delaware (herein called the "Company", which term includes any successor
Person under the Indenture hereinafter referred to), for value received, hereby
promises to pay to Cede & Co., or registered assigns, the principal sum of Four
Hundred Million Dollars ($400,000,000) on February 15, 2011 and to pay interest
thereon from February 12, 2001 or from the most recent Interest Payment Date to
which interest has been paid or duly provided for, semi-annually on February 15
and August 15 in each year, commencing August 15, 2001, at the rate of 6.50% per
annum, until the principal hereof is paid or made available for payment. The
interest so payable, and punctually paid or duly provided for, on any Interest
Payment Date will, as provided in such Indenture, be paid to the Person in whose
name this Security (or one or more Predecessor Securities) is registered at the
close of business on the Regular Record Date for such interest, which shall be
the February 1 or August 1 (whether or not a Business Day), as the case may be,
next preceding such Interest Payment Date. Any such interest not so punctually
paid or duly provided for will forthwith cease to be payable to the Holder on
such Regular Record Date and may either be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on a Special Record Date for the payment of such Defaulted Interest to
be fixed by the Trustee, notice whereof shall be given to Holders of Securities
of this series not less than 10 days prior to such Special Record Date, or be
paid at any time in any other lawful manner not inconsistent with the
requirements of any securities exchange on which the Securities of this series
may be listed, and upon such notice as may be required by such exchange, all as
more fully provided in said Indenture.

<PAGE>   2

       Payment of the principal of (and premium, if any) and any such interest
on this Security will be made at the office or agency of the Company maintained
for that purpose in New York, New York, in such coin or currency of the United
States of America as at the time of payment is legal tender for payment of
public and private debts; provided, however, that at the option of the Company
payment of interest may be made by check mailed to the address of the Person
entitled thereto as such address shall appear in the Security Register.

       Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

       Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

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

Dated: February 12, 2001

                                             DOVER CORPORATION

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

Attest:
       ---------------------------

Trustee's Certificate of Authentication

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

                                             BANK ONE TRUST COMPANY, N.A.,
                                                                As Trustee

                                             By:
                                                --------------------------------
                                                        Authorized Officer

<PAGE>   3

                              [Reverse of Security]

       This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under an Indenture, dated as of February 8, 2001 (herein called the
"Indenture", which term shall have the meaning assigned to it in such
instrument), between the Company and Bank One Trust Company, N.A., as Trustee
(herein called the "Trustee", which term includes any successor trustee under
the Indenture), and reference is hereby made to the Indenture for a statement of
the respective rights, limitations of rights, duties and immunities thereunder
of the Company, the Trustee and the Holders of the Securities and of the terms
upon which the Securities are, and are to be, authenticated and delivered. This
Security is one of the series designated on the face hereof initially limited in
aggregate principal amount to $400,000,000.

       The Securities of this series are subject to redemption upon not less
than 30 days' notice by mail, at any time, as a whole or in part, at the
election of the Company, at a redemption price equal to the greater of (i) 100%
of the principal amount of such Securities, and (ii) as determined by the
Quotation Agent (as defined below), the sum of the present values of the
remaining scheduled payments of principal and interest thereon (not including
any portion of such payments of interest accrued as of the date of redemption)
discounted to the date of redemption on a semi-annual basis (assuming a 360-day
year consisting of twelve 30-day months) at the Adjusted Treasury Rate (as
defined below) plus 20 basis points, together in the case of any such redemption
with accrued interest to the Redemption Date, but interest installments whose
Stated Maturity is on or prior to such Redemption Date will be payable to the
Holders of such Securities, or one or more Predecessor Securities, of record at
the close of business on the relevant Record Dates referred to on the face
hereof, all as provided in the Indenture.

       For purposes of this provision, "Adjusted Treasury Rate" means, with
respect to any redemption date, the rate per annum equal to the semi-annual
equivalent yield to maturity of the Comparable Treasury Issue, assuming a price
for the Comparable Treasury Issue (expressed as a percentage of its principal
amount) equal to the Comparable Treasury Price for such redemption date.

       "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the notes to be redeemed that would be utilized, at the time of
selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of such notes.

       "Comparable Treasury Price" means, with respect to any redemption date,
(i) the average of the Reference Treasury Dealer Quotations for such redemption
date, after excluding the highest and lowest such Reference Treasury Dealer
Quotations, or (ii) if the trustee obtains fewer than three such Reference
Treasury Dealer Quotations, the average of all such Quotations.

       "Quotation Agent" means the Reference Treasury Dealer appointed by the
Company.

<PAGE>   4

       "Reference Treasury Dealer" means (i) each of Chase Securities Inc.,
Deutsche Banc Alex. Brown Inc., and their respective successors and three other
nationally recognized investment banking firms that are Primary Treasury Dealers
specified from time to time by the Company; provided, however, that if any of
the foregoing shall cease to be a primary U.S. Government securities dealer in
New York City (a "Primary Treasury Dealer"), the Company shall substitute
therefor another Primary Treasury Dealer; and (ii) any other Primary Treasury
Dealer selected by the Company.

       "Reference Treasury Dealer Quotations" means with respect to each
Reference Treasury Dealer and any redemption date, the average, as determined by
the Company, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the trustee by such Reference Treasury Dealer at 5:00 p.m., New York
City time, on the third business day preceding such redemption date.

       In the event of redemption of this Security in part only, a new Security
or Securities of this series and of like tenor for the unredeemed portion hereof
will be issued in the name of the Holder hereof upon the cancellation hereof.

       The Indenture contains provisions for defeasance at any time of (i) the
entire indebtedness of this Security or (ii) certain restrictive covenants and
Events of Default with respect to this Security, in each case upon compliance
with certain conditions set forth in the Indenture.

       If an Event of Default with respect to Securities of this series shall
occur and be continuing, the principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture.

       The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in principal amount of the Securities at
the time Outstanding of each series to be affected. The Indenture also contains
provisions permitting the Holders of specified percentages in principal amount
of the Securities of each series at the time Outstanding, on behalf of the
Holders of all Securities of such series, to waive compliance by the Company
with certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. Any such consent or waiver by the Holder of
this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the registration
of transfer hereof or in exchange herefor or in lieu hereof, whether or not
notation of such consent or waiver is made upon this Security.

       As provided in and subject to the provisions of the Indenture, the Holder
of this Security shall not have the right to institute any proceeding with
respect to the Indenture or for the appointment of a receiver or trustee or for
any other remedy thereunder, unless such Holder shall have previously given the
Trustee written notice of a continuing Event of Default with respect to the
Securities of this series, the Holders of not less than 25% in principal amount
of the Securities of this series at the time Outstanding shall have made written
request to the Trustee to

<PAGE>   5

institute proceedings in respect of such Event of Default as Trustee and offered
the Trustee reasonable indemnity, and the Trustee shall not have received from
the Holders of a majority in principal amount of Securities of this series at
the time Outstanding a direction inconsistent with such request, and shall have
failed to institute any such proceeding, for 60 days after receipt of such
notice, request and offer of indemnity. The foregoing shall not apply to any
suit instituted by the Holder of this Security for the enforcement of any
payment of principal hereof or any premium or interest hereon on or after the
respective due dates expressed herein.

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

       As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registrable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in any place where the principal of and any
premium and interest on this Security are payable, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or his
attorney duly authorized in writing, and thereupon one or more new Securities of
this series and of like tenor, of authorized denominations and for the same
aggregate principal amount, will be issued to the designated transferee or
transferees.

       The Securities of this series are issuable only in registered form
without coupons in denominations of $1,000 and any integral multiple thereof. As
provided in the Indenture and subject to certain limitations therein set forth,
Securities of this series are exchangeable for a like aggregate principal amount
of Securities of this series and of like tenor of a different authorized
denomination, as requested by the Holder surrendering the same.

       No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

       Prior to due presentment of this Security for registration of transfer,
the Company, the Trustee and any agent of the Company or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

       All terms used in this Security which are defined in the Indenture shall
have the meanings assigned to them in the Indenture.

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