<PAGE>
 
                                                                   EXHIBIT 10.13
                            MASTER LEASE AGREEMENT


MASTER LEASE AGREEMENT ("Master Lease") dated as of ____________ between The CIT
Group/Equipment Financing, Inc. (Lessor),
 
having a place of business at 900 Ashwood Parkway, 6th Floor    Atlanta    GA  
                              --------------------------------------------------
                                         Address                 City     State 
30338, and Staodyn, Inc.                                             ("Lessee"),
-----      ----------------------------------------------------------          
Zip Code    

having a place of business at 1225 Ken Pratt Blvd.   Longmont    CO       80502
                              --------------------------------------------------
                                   Address             City     State   Zip Code


This Master Lease Agreement provides a set of terms and conditions that the
parties hereto intend to be applicable to various transactions for the lease of
personal property. Each lease contract shall be evidenced by an equipment
schedule ("Schedule") executed by Lessor and Lessee that explicitly incorporates
the provisions of this Master Lease Agreement and that sets forth specific terms
of that particular lease contract. Where the provisions of a Schedule conflict
with the terms hereof, the provisions of the Schedule shall prevail. Each
Schedule shall constitute a complete and separate lease agreement, independent
of all other Schedules, and without any requirement of being accompanied by an
originally executed copy of this Master Lease Agreement. The term "Lease" when
used herein shall refer to an individual Schedule.

One originally executed copy of the Schedule shall be denominated "Originally
Executed Copy No. 1 of ____ originally executed copies" and such copy shall be
retained by Lessor. If more than one copy of the Schedule is executed by Lessor
and Lessee, all such other copies shall be numbered consecutively with numbers
greater than 1. Only transfer of possession by Lessor of the originally executed
copy denominated "Originally Executed Copy No. 1" shall be effective for
purposes of perfecting an interest in such Schedule by possession.

1. EQUIPMENT LEASED AND TERM.

This Lease shall cover such personal property as is described in any Schedule
executed by or pursuant to the authority of Lessee, accepted by Lessor in
writing and identified as a part of this Lease (which personal property with all
replacement parts, additions, repairs, accessions and accessories incorporated
therein and/or affixed thereto is hereinafter called the "Equipment"). Lessor
hereby leases to Lessee and Lessee hereby hires and takes from Lessor, upon and
subject to the covenants and conditions hereinafter contained, the Equipment
described in any Schedule. NOTWITHSTANDING THE COMMENCEMENT DATE OF THE TERM OF
THIS LEASE WITH RESPECT TO ANY ITEM OF EQUIPMENT, LESSEE AGREES THAT ALL RISK OF
LOSS OF THE EQUIPMENT SHALL BE ON LESSEE FROM AND AFTER SHIPMENT OF THE
EQUIPMENT TO LESSEE BY THE SELLER THEREOF, F.O.B. seller's point of shipment,
the date of such shipment being hereinafter called "date of shipment." The term
of this Lease with respect to any item of Equipment shall be for the period as
set forth in the Schedule. Lessee hereby gives Lessor authority to insert the
actual commencement date and date of first monthly rental for any item of
Equipment in any Schedule as well as such items as serial numbers if such are
not already inserted when such Schedule is executed by Lessee. "Seller" as used
in this Lease means the supplier from which Lessor acquires any item of
Equipment.

2. RENT.

The aggregate rent payable with respect to each item of Equipment shall be in
the amount shown with respect to such item on the Schedule. Lessee shall pay to
Lessor the aggregate rental for each item of Equipment for the full period and
term for which the Equipment is leased, such rental to be payable at such times
and in such amounts for each item of Equipment as shown in the applicable
Schedule.

All rent shall be paid at Lessor's place of business shown above, or such other
place as Lessor may designate by written notice to the Lessee. ALL RENTS SHALL
BE PAID WITHOUT NOTICE OR DEMAND AND WITHOUT ABATEMENT, DEDUCTION OR SET OFF OF
ANY AMOUNT WHATSOEVER. The operation and use of the Equipment shall be at the
risk of Lessee and not of Lessor and the obligation of Lessee to pay rent
hereunder shall be unconditional.

                                                                     Page 1 of 7

<PAGE>
 
3.   DESTRUCTION OF EQUIPMENT.

If any Equipment is lost, totally destroyed, damaged beyond repair or taken by
governmental action, the liability of the Lessee to pay rent therefor may be
discharged by paying to Lessor all the rent due thereon, plus all the rent to
become due thereon less the net amount of the recovery, if any, actually
received by Lessor from insurance or otherwise for such loss or damage.

In the event of partial destruction of any Equipment, the rent due and to become
due thereon shall not abate and Lessee shall, at its own expense, cause such
Equipment to be restored to usable condition, but Lessor shall, upon receiving
satisfactory evidence of such restoration, promptly pay Lessee the proceeds of
any insurance or compensation received by reason of such damage. If the
estimated cost of restoring such Equipment exceeds 50% of the unmatured rent
therefor, such Equipment shall, on notice by Lessee, be deemed, for all purposes
hereof, to be totally destroyed and the liability of the Lessee to pay rent
therefor shall be discharged if Lessee pays the rent described in the preceding
paragraph of this Section.

Lessor shall not be obligated to undertake by litigation or otherwise the
collection of any claim against any person for loss or damage to the Equipment.

Except as expressly provided above, the total or partial destruction of any
Equipment or the total or partial loss of use or possession thereof to Lessee
shall not release or relieve Lessee from the duty to pay the rent herein
provided.

4.   NO WARRANTIES BY LESSOR; MAINTENANCE AND COMPLIANCE WITH LAWS.

Lessor, not being the manufacturer of the Equipment, nor manufacturer's agent,
MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESS OR IMPLIED, AS TO THE
FITNESS, QUALITY, DESIGN, CONDITION, CAPACITY, SUITABILITY, MERCHANTABILITY OR
PERFORMANCE OF THE EQUIPMENT OR OF THE MATERIAL OR WORKMANSHIP THEREOF, IT BEING
AGREED THAT THE EQUIPMENT IS LEASED "AS IS" AND THAT ALL SUCH RISKS, AS BETWEEN
LESSOR AND LESSEE, ARE TO BE BORNE BY LESSEE AT ITS SOLE RISK AND EXPENSE,
Lessee accordingly agrees not to assert any claim whatsoever against Lessor
based thereon. Lessee further agrees, regardless of cause, not to assert any
claim whatsoever against Lessor for loss of anticipatory profits or
consequential damages. Lessor shall have no obligation to install, erect, test,
adjust or service the Equipment. Lessee shall look to the manufacturer and/or
Seller for any claims related to the Equipment. Lessor hereby acknowledges that
any manufacturer's and/or Seller's warranties are for the benefit of both Lessor
and Lessee.

No oral agreement, guaranty, promise, condition, representation or warranty
shall be binding; all prior conversations, agreements or representations related
hereto and/or to the Equipment are integrated herein.

Lessee agrees, at its own cost and expense:

(a)  to pay all shipping charges and other expenses incurred in connection with
     the shipment of the Equipment by the Seller to Lessee;

(b)  to pay all charges and expenses in connection with the operation of each
     item of Equipment;

(c)  to comply with all governmental laws, ordinances, regulations, requirements
     and rules with respect to the use, maintenance and operation of the
     Equipment; and

(d)  to make all repairs and replacements required to be made to maintain the
     Equipment in good condition, reasonable wear and tear excepted.

5.   INSURANCE.

Lessee shall maintain at all times on the Equipment, at its expense, all-risk
physical damage insurance and comprehensive general and/or automobile (as
appropriate) liability insurance (covering bodily injury and property damage
exposures including, but not limited to, contractual liability and products
liability) in such amounts, against such risks, in such form and with such
insurers as shall be satisfactory to Lessor; provided, that the amount of all-
risk physical damage insurance shall not on any date be less than the greater of
the full replacement value or a sum equal to all the rent due thereon, plus all
rent to become due. Each physical damage insurance policy will name Lessor as
loss payee. Each liability insurance policy will name Lessor as additional
insured. Each insurance policy will also require that the insurer give Lessor at
least thirty (30) days prior written notice of any alteration in or cancellation
of the terms of such policy and require that Lessor's interests be continued
insured regardless of any breach or violation by Lessee or others of any
warranties, declarations or conditions contained in such insurance policy. In no
event shall Lessor be responsible for premiums, warranties or representations to
any insurer or any agent thereof. Lessee shall furnish to Lessor a certificate
or other evidence satisfactory to Lessor that such insurance coverage is in
effect, but Lessor shall be under no duty to ascertain the existence or adequacy
of such insurance. The insurance maintained by Lessee shall be primary without
any right of contribution from insurance which may be

                                                                     Page 2 of 7

<PAGE>
 
maintained by Lessor. Lessee shall be liable for all deductible portions of all
required insurance. Lessor may, at its own expense, for its own benefit,
purchase insurance in excess of that required under this Lease Agreement.
Physical damage insurance proceeds shall be applied as set forth in Section 6.

6.  LOSS AND DAMAGE.

Lessee agrees to assume and bear the entire risk of any partial or complete loss
with respect to the Equipment from any and every cause whatsoever including
theft, loss, damage, destruction or governmental taking, whether or not such
loss is covered by insurance or caused by any default or neglect of Lessee.
Lessee agrees to give Lessor prompt notice of any damage to or loss of any
Equipment. All physical damage insurance proceeds shall be payable directly to
Lessor. Following payment of such loss, and if no Event of Default as defined in
Section 11 has occurred and remains continuing, Lessor will then:

(a) transfer to Lessee Lessor's rights to such Equipment "as-is, where-is and
    with all defects," without recourse and without representation or warranty,
    express or implied, other than a warranty that the Equipment is free and
    clear of any liens created by Lessor; and

(b) remit to Lessee any physical damage insurance proceeds arising out of such
    loss in excess of the sum due the Lessor.

Lessee shall determine in the exercise of its reasonable judgment whether the
Equipment is damaged beyond repair, subject to Lessor's approval. In the event
of damage or loss which does not result in damage beyond repair or a total loss
of the Equipment or any item thereof, Lessee shall cause the affected Equipment
to be restored to the condition required by the terms of this Lease. Upon
completion of such repair and after supplying Lessor with satisfactory evidence
thereof (and provided no Event of Default has occurred and remains continuing),
Lessee shall be entitled to receive any insurance proceeds or other recovery to
which Lessor would otherwise be entitled in connection with such loss up to the
amount expended by Lessee in making the repair.

Lessor shall not be obligated to undertake by litigation or otherwise the
collection of any claim against any person for loss of, damage to, or
governmental taking of the Equipment, but Lessor will cooperate with Lessee at
Lessee's expense to pursue such claims.

Except as expressly provided above, the total or partial destruction of any
Equipment or Lessee's total or partial loss of use or possession thereof shall
not release or relieve Lessee from its obligations under this Master Lease or
any Schedule including the duty to pay the rent(s) herein provided.

7.  TAXES.

Lessee agrees that, during the term of this Lease, in addition to the rent and
all other amounts provided herein to be paid, it will promptly pay all taxes,
assessments and other governmental charges (including penalties and interest, if
any, and fees for titling or registration, if required) levied or assessed:

(a) upon the interest of Lessee in the Equipment or upon the use or operation
    thereof or on the earnings arising therefrom; and

(b) against Lessor on account of its acquisition or ownership of the Equipment
    or any part thereof, or the use or operation thereof or the leasing hereof
    to Lessee, or the rent herein provided for, or the earnings arising
    therefrom, exclusive, however, of any taxes based on net income of Lessor.

Lessee agrees to file, in behalf of Lessor, all required tax returns and reports
concerning the Equipment with all appropriate governmental agencies, and within
not more than 45 days after the due date of such filing to send Lessor
confirmation, in form satisfactory to Lessor, of such filing.

8.  LESSOR'S TITLE, RIGHT OF INSPECTION AND IDENTIFICATION OF EQUIPMENT.

TITLE TO THE EQUIPMENT SHALL AT ALL TIMES REMAIN IN LESSOR and Lessee will at
all times protect and defend, at its own cost and expense, the title of Lessor
from and against all claims, liens and legal processes of creditors of Lessee
and keep all the Equipment free and clear from all such claims, liens and
processes. The Equipment is and shall remain personal property. Upon the
expiration or termination of this Lease with respect to any item of Equipment:

a)  Lessee at Lessee's sole expense shall return such Equipment unencumbered to
    Lessor at the place where the rent is payable or to such other place as
    Lessor and Lessee agree upon, and in the same condition as when received by
    Lessee, reasonable wear and tear resulting from use thereof alone excepted;
    or

(b) in lieu of returning such Equipment to Lessor, Lessee agrees that Lessee
    will, upon request of Lessor, store such Equipment on Lessee's premises, at
    an inside location protected from the weather and elements, without charge
    to Lessor for a period of 180
                                                                     Page 3 of 7
<PAGE>
 
     days following the date of expiration or termination of this Lease. During
     such storage period Lessee shall not use the Equipment for any purpose.
     Upon expiration of such storage period Lessee will return such Equipment to
     Lessor in accordance with the provisions of (a) above.

Lessor shall have the right from time to time during reasonable business hours
to enter upon Lessee's premises or elsewhere for the purpose of confirming the
existence, condition and proper maintenance of the Equipment and during any
period of storage Lessor shall also have the right to demonstrate and show the
Equipment to others. The foregoing rights of entry are subject to any applicable
governmental laws, regulations and rules concerning industrial security. Lessee
shall, upon the request of Lessor, and at its own expense firmly affix to the
Equipment, in a conspicuous place, such a decalcomania or metal plate as shall
be supplied by Lessor showing the Lessor as the owner and lessor of such
Equipment.

9.   POSSESSION, USE AND CHANGES IN LOCATION OF EQUIPMENT.

So long as Lessee shall not be in default under the Lease it shall be entitled
to the possession and use of the Equipment in accordance with the terms of this
Lease. The Equipment shall be used in the conduct of the lawful business of
Lessee, and no item of Equipment shall be removed from its location shown on the
Schedule, without the prior written consent of Lessor. Lessee shall not, without
Lessor's prior written consent, part with possession or control of the Equipment
or attempt or purport to sell, pledge, mortgage or otherwise encumber any of the
Equipment or otherwise dispose of or encumber any interest under this Lease.

10.  PERFORMANCE OF OBLIGATIONS OF LESSEE BY LESSOR.

In the event that the Lessee shall fail duly and promptly to perform any of its
obligations under the provisions of Sections 4, 5, 6, 7, and 8 of this Lease,
Lessor may, at its option, perform the same for the account of Lessee without
thereby waiving such default, and any amount paid or expense (including
reasonable attorneys' fees), penalty or other liability incurred by Lessor in
such performance, together with interest at the rate of 1 1/2% per month thereon
(but in no event greater than the highest rate permitted by relevant law) until
paid by Lessee to Lessor, shall be payable by Lessee upon demand as additional
rent for the Equipment. Lessee shall be responsible for and pay to Lessor a
returned check fee, not to exceed the maximum permitted by law, which fee will
be equal to the sum of (i) the actual bank charges incurred by Lessor plus (ii)
all other actual costs and expenses incurred by Lessor. The returned check fee
is payable upon demand as additional rent under this Lease.

11.  DEFAULT.

An Event of Default shall occur if:

(a)  Lessee fails to pay when due any installment of rent and such failure
     continues for a period of 10 days;

(b)  Lessee shall fail to perform or observe any covenant, condition or
     agreement to be performed or observed by it hereunder and such failure
     continues uncured for 15 days after written notice thereof to Lessee by
     Lessor;

(c)  Lessee ceases doing business as a going concern, makes an assignment for
     the benefit of creditors, admits in writing its inability to pay its debts
     as they become due, files a voluntary petition in bankruptcy, is
     adjudicated a bankrupt or an insolvent, files a petition seeking for itself
     any reorganization, arrangement, composition, readjustment, liquidation,
     dissolution or similar arrangement under any present or future statute, law
     or regulation or files an answer admitting the material allegations of a
     petition filed against it in any such proceeding, consents to or acquiesces
     in the appointment of a trustee, receiver, or liquidator of it or of all or
     any substantial part of its assets or properties, or if it or its
     shareholders shall take any action looking to its dissolution or
     liquidation;

(d)  within 60 days after the commencement of any proceedings against Lessee
     seeking reorganization, arrangement, readjustment, liquidation, dissolution
     or similar relief under any present or future statute, law or regulation,
     such proceedings shall not have been dismissed, or if within 60 days after
     the appointment without Lessee's consent or acquiescence of any trustee,
     receiver or liquidator of it or of all or any substantial part of its
     assets and properties, such appointment shall not be vacated; or

(e)  Lessee attempts to remove, sell, transfer, encumber, part with possession
     or sublet the Equipment or any item thereof.

Upon the occurrence of an Event of Default, Lessor shall have all the rights and
remedies provided by applicable law and by this Lease. Notwithstanding that this
Agreement is a lease and title to the Equipment is at all times in Lessor,
Lessor may nevertheless at its option choose those rights and remedies of a
secured party under the Uniform Commercial Code. In addition, Lessor, at its
option, may:

                                                                     Page 4 of 7
<PAGE>
 
(a)  declare all sums due and to become due hereunder immediately due and
     payable, but in no event shall the Lessee, upon demand by Lessor for
     payment of the unpaid rent, upon acceleration of the maturity thereof or
     otherwise, be obligated to pay any amount in excess of that permitted by
     law;

(b)  proceed by appropriate court action or actions or other proceedings either
     at law or equity to enforce performance by the Lessee of any and all
     covenants of this Lease and to recover damages for the breach thereof;

(c)  demand that Lessee deliver the Equipment forthwith to Lessor at Lessee's
     expense at such place as Lessor may designate; and

(d)  Lessor and/or its agents may without notice or liability or legal process,
     enter into any premises of or under control or jurisdiction of Lessee or
     any agent of Lessee where the Equipment may be or by Lessor is believed to
     be, and repossess all or any item thereof, disconnecting and separating all
     thereof from any other property and using all force necessary or permitted
     by applicable law so to do, Lessee hereby expressly waiving all further
     rights to possession of the Equipment and all claims for injuries suffered
     through or loss caused by such repossession; Lessor may sell or lease the
     Equipment at a time and location of its choosing provided that the Lessor
     acts in good faith and in a commercially reasonable manner, but the Lessor
     shall nevertheless, be entitled to recover immediately as liquidated
     damages for loss of the bargain and not as a penalty any unpaid rent that
     accrued on or before the occurrence of the event of default plus an amount
     equal to the difference between the aggregate rent reserved hereunder for
     the unexpired term of this Lease and the then aggregate rental value of all
     Equipment for such unexpired term, provided, however, that if any statute
     governing the proceeding in which such damages are to be proved specifies
     the amount of such claim, Lessor shall be entitled to prove as and for
     damages for the breach an amount equal to that allowed under such statute.
     The provisions of this paragraph shall be without prejudice to any rights
     given to the Lessor by such statute to prove for any amounts allowed
     thereby. Should any proceedings be instituted by or against Lessor for
     monies due to Lessor hereunder and/or for possession of any or all of the
     Equipment or for any other relief, Lessee shall pay a reasonable sum as
     attorneys' fees.

No remedy of Lessor hereunder shall be exclusive of any remedy herein or by law
provided, but each shall be cumulative and in addition to every other remedy.

12.  INDEMNITY.

Lessee agrees that Lessor shall not be liable to Lessee for, and Lessee shall
indemnify and save Lessor harmless from and against any and all liability, loss,
damage, expense, causes of action, suits, claims or judgments arising from or
caused directly or indirectly by:

(a)  Lessee's failure to promptly perform any of its obligations under the
     provisions of Sections 4, 5, 6, 7 and 8 of this Lease; or

(b)  injury to persons or damage to property resulting from or based upon actual
     or alleged use, operation, delivery or transportation of any or all of the
     Equipment or its location or condition; or

(c)  inadequacy of the Equipment, or any part thereof, for any purpose or any
     deficiency or defect therein or the use or maintenance thereof or any
     repairs, servicing or adjustments thereto or any delay in providing or
     failure to provide any thereof or any interruption or loss of service or
     use thereof or any loss of business; and shall, at its own cost and
     expense, defend any and all suits which may be brought against Lessor,
     either alone or in conjunction with others upon any such liability or claim
     or claims and shall satisfy, pay and discharge any and all judgments and
     fines that may be recovered against Lessor in any such action or actions,
     provided, however, that Lessor shall give Lessee written notice of any such
     claim or demand. Lessee agrees that its obligations under this Section 12
     shall survive the expiration or termination of this Lease.

13.  ASSIGNMENT, NOTICES AND WAIVERS.

This Lease and all rights of Lessor hereunder shall be assignable by Lessor
without Lessee's consent, but Lessee shall not be obligated to any assignee of
Lessor except after written notice of such assignment from Lessor. Following
such assignment,

solely for the purpose of determining assignee's rights hereunder, the term
"Lessor" shall be deemed to include or refer to Lessor's assignee. WITHOUT THE
PRIOR WRITTEN CONSENT OF LESSOR, LESSEE SHALL NOT ASSIGN THIS LEASE OR ITS
INTERESTS HEREUNDER OR ENTER INTO ANY SUB-LEASE WITH RESPECT TO THE EQUIPMENT
COVERED HEREBY, IT BEING AGREED LESSOR WILL NOT UNREASONABLY WITHHOLD ITS
CONSENT TO A SUB-LEASE OF THE EQUIPMENT. All notices to Lessor shall be
delivered in person to an officer of the Lessor, or shall be sent certified mail
return receipt requested to Lessor at its address shown herein or at any later
address last known to the sender. All notices to Lessee shall be in writing and
shall be delivered by mail at its address shown herein or at any later address
last known to the sender. A waiver of a default shall not be a waiver of any
other or a subsequent default.
                                                                     Page 5 of 7

<PAGE>
 
14. FURTHER ASSURANCES.

Lessee shall execute and deliver to Lessor, upon Lessor's request such
instruments and assurances as Lessor deems necessary or advisable for the
confirmation or perfection of this Lease and Lessor's rights hereunder. Lessee
may not terminate any Schedule without the written consent of Lessor. If Lessor
in good faith believes itself insecure or performance impaired, it may declare a
default hereunder or, instead of declaring a default, Lessor may demand, and
Lessee hereby agrees to give, additional Equipment or other collateral as
security for the obligations hereunder.

15. LEASE IRREVOCABILITY.

This Lease is irrevocable for the full terms thereof as set forth in any
Schedule and for the aggregate rentals therein reserved and the rent shall not
abate by reason of termination of Lessee's right of possession and/or the taking
of possession by the Lessor or for any other reason. Any payment not made when
due shall, at the option of Lessor, bear late charges thereon calculated at the
rate of 1 1/2% per month, but in no event greater than the highest rate
permitted by relevant law.

16. PURCHASE OPTION.

If any Schedule has a purchase option price set forth therein with respect to
the items of Equipment listed on such Schedule, then at the expiration of the
original lease term in such Schedule with respect to such items of Equipment, if
Lessee has paid in full all rentals owing under such Schedule, and be not then
in default under this Lease (including all obligations under any Schedule),
Lessee shall have the option to purchase ALL, BUT NOT LESS THAN ALL, THE ITEMS
OF EQUIPMENT IN THE APPLICABLE SCHEDULE upon giving written notice not less than
30 DAYS prior to expiration of the original term thereof. The purchase price
shall be as set forth in the applicable Schedule and shall be payable upon
expiration of the original Lease term. If any Schedule does not contain a
purchase option price, then Lessee shall not have an option to purchase any
Equipment on such Schedule.

Any purchase option price stated as "fair market value" ("FMV") for any item of
Equipment on a Schedule shall be determined on the basis of, and shall be equal
in amount to, the value which would obtain in an arm's length transaction
between an informed and willing buyer-user (other than a Lessee currently in
possession and a used Equipment dealer) and an informed and willing seller under
no compulsion to sell and, in such determination, costs of removal of the items
of Equipment from their location of current use shall not be a deduction from
such value.

17. RENEWAL.

Any renewal privilege shown on any Schedule with respect to any item of
Equipment shall be exercised by Lessee giving Lessor a notice in writing and
paying Lessor the amount of the renewal rental plus applicable taxes, at least
45 DAYS prior to the commencement of the renewal term of the Lease with respect
to such item of Equipment. Upon such notification and payment, this Lease shall
be renewed for the stated renewal period at the stated renewal rental with the
other provisions and conditions of the lease continuing unchanged.

18. MISCELLANEOUS

If any provision of this Lease is contrary to, prohibited by or deemed invalid
under applicable laws or regulations of any jurisdiction, such provision shall
be inapplicable and deemed omitted but shall not invalidate the remaining
provisions hereof.

IN THE EVENT THIS LEASE OR ANY PART HEREOF IS DEEMED TO BE A LEASE INTENDED AS
SECURITY, LESSEE GRANTS LESSOR A SECURITY INTEREST IN EACH ITEM OF EQUIPMENT AS
SECURITY FOR ALL OF LESSEE'S INDEBTEDNESS AND OBLIGATIONS OWING UNDER THIS LEASE
AND UNDER EACH SCHEDULE AS WELL AS ALL OTHER PRESENT AND FUTURE INDEBTEDNESS AND
OBLIGATIONS OF LESSEE TO LESSOR OF EVERY KIND AND NATURE WHATSOEVER.

This lease contains the entire agreement between the parties with respect to the
Equipment and may not be altered, modified, terminated or discharged except by a
writing signed by the party against whom such alteration, modification,
termination or discharge is sought. LESSEE'S INITIALS ___________

                                                                     Page 6 of 7

<PAGE>
 
19. SPECIAL PROVISIONS.




If Lessee is a corporation, this Lease is executed by authority of its Board of
Directors. If Lessee is a partnership or joint venture, this Lease is executed
by authority of all its partners or co-venturers.

Dated:
       ---------------

LESSEE:


Staodyn, Inc.
---------------------------------------------------------------------
Name of individual, corporation or partnership

By /s/ Michael J. Newman         Title  V.P. - Finance
  ------------------------------       ------------------------------
If corporation, have signed by President, Vice President or Treasurer, 
and give official title.
If owner or partner, state which.


LESSOR:

THE CIT GROUP/EQUIPMENT FINANCING, INC.

By                                 Title
   -------------------------------       ---------------------------

--------------------------------------------------------------------------------
If Lessee is a partnership, enter:
Partners' names                                     Home addresses
---------------                                     --------------

                                                                     Page 7 of 7
<PAGE>
 
EQUIPMENT SCHEDULE NO. 01, dated ___________________, to Master Lease Agreement,
                       --
dated

________________, between THE CIT GROUP/EQUIPMENT FINANCING, INC. ("Lessor") and

Staodyn, Inc.                                                        ("Lessee").
-------------------------------------------------------------------- 

This Equipment Schedule incorporates the terms and conditions of the above-
referenced Master Lease Agreement.

This is Originally Executed Copy No. 1 of _____ originally executed copies. Only
transfer of possession by Lessor of Originally Executed Copy No. 1 shall be
effective for purposes of perfecting an interest in this Schedule by possession.


The Equipment listed on this Schedule will be located at
 
1225 Ken Pratt Blvd.      Longmont      Boulder      CO         80502
--------------------------------------------------------------------------------
Address                   City          County       State      Zip Code

LEASE TERM: The term of this Lease for the items described in this Schedule
shall be 60 months.
         --       

RENTALS: For said term or any portion thereof, Lessee shall pay to Lessor the
stated aggregate rentals, of which

$ 0.00           is herewith paid in advance and the balance of the rentals is
----------------
payable in 60 equal, successive, monthly payments as stated, of which the first
           --
is due on the first monthly rental date set forth below, and the others on a
like date of each month thereafter, until fully paid.

<TABLE>
<CAPTION>
====================================================================================================================

Item                    Description of Equipment                                     Aggregate      Monthly
No.      (Include make, kind of unit, year, model and serial number.)                 Rental        Rental
--------------------------------------------------------------------------------------------------------------------
<C>      <S>                                                                        <C>            <C> 
         One (1) Mydata TP11-UFP W/Hydraspeed Mount Option                          $340,991.81     $5,683.20
         together with all additions, substitutions, attachments, replacements,
         and accessions thereof, plus the proceeds of all the foregoing.
====================================================================================================================

====================================================================================================================
Item                Date                    Date of                     Renewals                Purchase 
No.              Lease Term              First Monthly              (No. of Years and            Option
                 Commences                  Rental                   Amount per Year)            Price 
--------------------------------------------------------------------------------------------------------------------  
<S>              <C>                     <C>                        <C>                         <C> 
                                                                                                  $1.00
====================================================================================================================
</TABLE>  

                                                                     Page 1 of 2

<PAGE>
 
The Lease term commences on _______________________________.

The first Monthly Rental is due on ________________________.

The Lease term may be renewed for _____ months with the Monthly Rental for such

renewal term of _______________________.

The Lessee has the option to purchase the Equipment as of the last day of the
initial Lease term for $  1.00         .
                         -------------

Special Provisions Instructions




ACCEPTED:


LESSEE:


Staodyn, Inc.
----------------------------------------------------------------

By /s/ Michael J. Newman      Title  V.P. -  Finance
   --------------------------      -----------------------------


LESSOR:


The CIT Group/Equipment Financing, Inc.
----------------------------------------------------------------

By                            Title
   --------------------------       ----------------------------

                                                                     Page 2 of 2

<PAGE>
 
                           SECRETARY'S CERTIFICATE 


I, ________________________________________________, do hereby certify that I am
Secretary of Staodyn, Inc., a corporation duly organized and existing under the
             -------------
laws of the State of Delaware ("Corporation"); that I am the keeper of the
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seal of the Corporation and corporation records, including without limitation,
the Charter, By-Laws and the minutes of the Board of Directors of the
Corporation; that the following is an accurate and compared transcript of the
resolutions contained in the minute book of the Corporation which resolutions
were duly adopted and ratified at a meeting of the Board of Directors of the
Corporation duly convened and held inaccordance with the By-Laws and Charter of
the Corporation on _____, at which time a quorum was present and acted
throughout; and that said resolutions have not in any way been modified,
repealed or rescinded, but are in full force and effect:

     "RESOLVED, that any officer of the Corporation be and is hereby authorized
     and empowered in the name and on behalf of this Corporation to enter into
     one or more lease agreements with The CIT Group/Equipment Financing, Inc.
     (hereinafter called "CIT") concerning personal property leased to the
     Corporation; from time to time to modify, supplement or amend any such
     agreements; and to do and perform all other acts and things deemed by such
     officer to be necessary, convenient or proper to carry out any of the
     foregoing; and be it

     FURTHER RESOLVED, that any of the aforesaid officers, or his or her duly
     elected or appointed successor in office, be and is hereby authorized and
     empowered to do any acts, including but not limited to the mortgage, pledge
     or hypothecation from time to time to CIT of any or all assets of this
     Corporation to secure such leases, and to execute in the name and on behalf
     of this Corporation, any instruments or agreements deemed necessary or
     proper by CIT in respect of the collateral securing any obligations of this
     Corporation, and to affix the seal of this Corporation to any mortgage,
     pledge or other such instrument if so required or requested by CIT; and be
     it

     FURTHER RESOLVED, that all that any officer shall have done or may do in
     connection with the matters outlined above is hereby ratified and approved;
     and be it

     FURTHER RESOLVED, that the foregoing resolutions shall remain in full force
     and effect until written notice of their amendment or recision shall have
     been received by CIT and that receipt of such notice shall not affect any
     action taken or advances made by CIT prior thereto and CIT is authorized to
     rely upon said resolutions until receipt by it of written notice of any
     change; and be it

     FURTHER RESOLVED, that the Secretary be and is hereby authorized and
     directed to certify to CIT that the foregoing resolutions and the
     provisions thereof are in conformity with the Charter and By-Laws of this
     Corporation."

I DO FURTHER CERTIFY THAT THE MASTER LEASE AGREEMENT ENTERED INTO BY THE
CORPORATION AND CIT IS AN AGREEMENT REFERRED TO IN SAID RESOLUTIONS AND WAS DULY
EXECUTED PURSUANT THERETO AND THERE ARE NO RESTRICTIONS IMPOSED BY THE CHARTER
OR BY-LAWS OF THE CORPORATION RESTRICTING THE POWER OR AUTHORITY OF THE BOARD OF
DIRECTORS OF THE CORPORATION TO ADOPT THE FOREGOING RESOLUTIONS OR UPON THE
CORPORATION OR ITS OFFICERS TO ACT IN ACCORDANCE THEREWITH.

I do further certify that the following are names and specimen signatures of
offices the Corporation empowered and authorized by the above resolutions, each
of which has been duly elected to hold and currently holds the office of the
Corporation set opposite his or her name:

     NAME                     OFFICE                   SIGNATURE

-----------------          ------------          ---------------------
Michael J. Newman          V.P.-Finance          /s/ Michael J. Newman
-----------------          ------------          ---------------------

-----------------          ------------          ---------------------

IN WITNESS WHEREOF, I have hereunto set my hand and affixed the seal of the
Corporation on ______________.

CORPORATE SEAL


/s/ Michael J. Newman
---------------------
Secretary

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                                                               _________________
                                                               Date


THE CIT GROUP/EQUIPMENT FINANCING, INC.

900 Ashwood Parkway - 6th Floor
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Address

Atlanta                           GA      30338
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City                              State   Zip Code


Gentlemen:

You are irrevocably instructed to disburse the proceeds of the Schedule of
Leased Equipment No. 0l dated _________________, to Master Lease Agreement dated
                     --
_________________, between Staodyn, Inc. as Lessee and the CIT Group/Equipment
                           -------------
Financing, as Lessor, as follows:


         Payee Names and Addresses                               Amount   
--------------------------------------------                  ------------
                                                                          
Mydata                                                        $ 221,821.60
                                                                          
Staodyn, Inc.                                                 $  55,455.40
                                                                          
The CIT Group/Equipment Financing, Inc. - Processing Fee      $     250.00
                                                              ------------
                                                                          
                                          Total Proceeds      $ 277,527.00 
                                                              ------------



Very truly yours,



Staodyn, Inc.
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By /s/Michael J. Newman        Title V.P. - Finance
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