BISON INSTRUMENTS INC
10SB12G/A, 1999-09-10
NON-OPERATING ESTABLISHMENTS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-SB
                        GENERAL FORM FOR REGISTRATION OF
                      SECURITIES OF SMALL BUSINESS ISSUERS
           UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934

Bison Instruments, Inc.
- - ----------------------------------------------
(Name of Small Business Issuer in its charter)



Minnesota                                   E41-0947661
- - -----------------------------------         ------------------------------------
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)



5610 Rowland Road                                55343-8956
- - ------------------------------------------       -------------------------------
(Address of principal executive office)          (Zip Code)



Issuer's telephone number (612) 931-0051
                          -----------------------

Securities to be registered pursuant to Section 12(b) of the Act.

     Title of each class                         Name of each exchange on which
                                                 registered

     Common Stock                                OTCBB
     -------------------------------------       -------------------------------

Securities to be registered pursuant to Section 12(g) of the Act.

Common Stock
- - --------------------------------------------------------------------------------


                                  Page 1 of 86
<PAGE>


                                     PART I

ITEM 1. DESCRIPTION OF BUSINESS

The Company was incorporated under the laws of the State of Minnesota on January
18, 1968.

The Company has not been subject to any bankruptcy, receivership or similar
proceedings.

In the last fiscal year and the first quarter of the current year, the Company
sold substantially all of the assets of the Company outside of the ordinary
course of business.

Prior to the sale of its assets, the Company was engaged in the manufacture and
sale of electronic instrumentation. The Company currently is only engaged in
residual sales of inventory on hand. The Company has ceased manufacturing new
products.

The Company currently has one employee.

The Company sends out audited financial statements for each fiscal year-end to
its security holders. The Company has not previously filed any reports with the
Securities and Exchange Commission.

ITEM 2. MANAGEMENT'S DISCUSSION OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS.

Sales from operations were $520,000 in 1998 compared with $2,554,000 in 1997.
The net loss for 1998 was $152,000, or $0.17 per share, compared with a loss in
1997 of $1,298,000 or $1.46 per share. The 1998 loss includes other income of
$118,000.

The other income received by the Company in 1998 was from the sale of its
Galileo and Jupiter seismic product lines. Proceeds of the transaction totaled
$474,000. In 1998, the total proceeds on disposal of fixed assets and product
lines were $503,000. These proceeds were applied to repay a loan payable to its
parent company, Autrex Inc., in the amount of $450,000.

In October, Bison entered into a conditional agreement to sell it remaining
product line, the Mu-Meter Airport Runway Friction Measuring System. This sale,
which was approved by the shareholders in November, closed that month. The sale
generated proceeds of $179,000 and a gain of $90,000. This gain was recognized
in the first quarter of 1999.

The Company has continued its efforts to sell off its remaining inventory. Sales
through the third quarter were $32,880, resulting in a profit of $83,750. This
compares to sales of $486,950 and a loss of $68,340 for the same period last
year.

Bison has significant losses available to carry forward against future taxable
income.


                                  Page 2 of 86
<PAGE>


As operations have been wound down, Bison's staffing levels have been reduced.
Other operating expenses were also reduced to a minimum, and only one salaried
employee remains in Bison. The General Manager, Larry Martin, administers the
corporate affairs of the Company and monitors residual business matters.

The sale of the product lines has essentially rendered Bison inactive. However,
other business opportunities for the remaining shell corporation, will be
pursued.

ITEM 3. DESCRIPTION OF PROPERTY.

The Company operates out of leased office space located at 5610 Rowland Road,
Minneapolis, Minnesota.

The Company does not currently hold investments in real estate or mortgages
relating to real estate.

ITEM 4. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

(a)  Security Ownership Greater than 5%

     ---------------------------------------------------------------------------
           (1)                 (2)                    (3)               (4)
     ---------------------------------------------------------------------------
     TITLE OF CLASS     NAME AND ADDRESS        AMOUNT AND           PERCENT OF
                        OF BENEFICIAL OWNER     NATURE OF            CLASS
                                                BENEFICIAL OWNER
     ---------------------------------------------------------------------------
     Common Stock       Andus, Inc.             595,539 Common       67.05%
                                                Shares
     ---------------------------------------------------------------------------

(b)  Security Ownership of Management

     ---------------------------------------------------------------------------
           (1)                 (2)                    (3)               (4)
     ---------------------------------------------------------------------------
     TITLE OF CLASS     NAME AND ADDRESS        AMOUNT AND           PERCENT OF
                        OF BENEFICIAL OWNER     NATURE OF            CLASS
                                                BENEFICIAL OWNER
     ---------------------------------------------------------------------------
     Common Stock       Allan D. Erickson       12,418 Common        1.40%
                                                Shares
     ---------------------------------------------------------------------------
     Common Stock       Andus, Inc.*            595,539 Common       67.05%
                                                Shares
     ---------------------------------------------------------------------------

          *    Andus, Inc., a Delaware corporation, is a subsidiary of Autrex
               Inc., a Canadian corporation. Androcan Inc., a Canadian
               corporation, is the majority shareholder of Autrex Inc. Androcan
               Inc. is ultimately controlled by Barrie D. Rose, and members of
               his immediate family.

(c)  Change in Control

     There are not currently any arrangements in place which may result in a
     change in control of the Company.


                                  Page 3 of 86
<PAGE>


ITEM 5. DIRECTORS AND EXECUTIVE OFFICERS, PROMOTERS AND CONTROL PERSONS.

                                    DIRECTORS

     NAME                    AGE     POSITIONS HELD                       SERVED
                                                                          SINCE
     Barrie D. Rose          69      Director, Bison Instruments, Inc.     1983
                                     Chairman, and Chief Executive
                                     Officer, Androcan Inc.
                                     Chairman and Chief Executive
                                     Officer, Autrex Inc.
                                     Chairman and President,
                                     Andus Inc.

     Allan D. Erickson       55      Director, Bison Instruments, Inc.     1982
                                     President, Dagan Corporation
                                     One of Principal Shareholders,
                                     Dagan Corporation

     Glen A. Peer            36      Director, Bison Instruments, Inc.     1996
                                     Director, Autrex Inc.
                                     President, Pylon Electronics Inc.

     Edward G. Lampman       54      Director, Chief Executive             1996
                                     Officer, Bison Instruments, Inc.
                                     President, Androcan Inc.
                                     Executive Vice-President,
                                     Autrex Inc.
                                     Vice-President, Andus, Inc.

     Lawrence M. Martin      58      Director and General Manager,
                                     Bison Instruments, Inc.               1998

          None of the directors or officers, or any companies employing them,
          have been subject to any bankruptcy, or criminal proceedings or are
          subject to any orders by the civil courts limiting their ability to
          carry on business or trade in securities.


                                  Page 4 of 86
<PAGE>


ITEM 6. EXECUTIVE COMPENSATION.

(a)  Summary Compensation Table

<TABLE>
<CAPTION>
- - -------------------------------------------------------------------------------------------------------------
                                    ANNUAL COMPENSATION             LONG-TERM COMPENSATION
                                                               -------------------------------
                                                                        AWARDS         PAYOUTS
                             -------------------------------   ---------------------   -------
       (a)            (b)      (c)      (d)         (e)          (f)         (g)         (h)         (i)
- - -------------------------------------------------------------------------------------------------------------
NAME AND
PRINCIPAL            YEAR    SALARY    BONUS    COMPENSATION   AWARD(S)    OPTIONS     PAYOUTS   COMPENSATION
POSITION                     ($)       ($)      ($)            ($)         /SARs (#)   ($)       ($)
- - -----------------    ----    -------------------------------   ---------------------   -------   ------------
<S>                  <C>     <C>                               <C>                     <C>       <C>
Edward G.            1998                 nil                           nil            nil       nil
                     ----------------------------------------------------------------------------------------
Lampman, Chief       1997                 nil                           nil            nil       nil
                     ----------------------------------------------------------------------------------------
Executive Officer    1996                 nil                           nil            nil       nil
- - -------------------------------------------------------------------------------------------------------------
</TABLE>

(b)  Option/SAR in Last Fiscal Year

<TABLE>
<CAPTION>
- - -------------------------------------------------------------------------------------------------------------
                                             INDIVIDUAL GRANTS
- - -------------------------------------------------------------------------------------------------------------
     (a)                   (b)                     (c)                     (d)                    (e)
- - -------------------------------------------------------------------------------------------------------------
NAME                   NUMBER OF               % OF TOTAL           EXERCISE OR BASE        EXPIRATION DATE
                       SECURITIES              OPTIONS/SARs         PRICE ($/Sh)
                       UNDERLYING              GRANTED TO
                       OPTIONS/SARs            EMPLOYEES IN
                       GRANTED (#)             FISCAL YEAR
- - -------------------------------------------------------------------------------------------------------------
<S>                    <C>                     <C>                  <C>                     <C>
     N/A *                  --                      --                     --                     --

- - -------------------------------------------------------------------------------------------------------------
</TABLE>

(c)  Aggregate Option/SAR Exercises in Last Fiscal Year and FY-end Option/Share
     Values

<TABLE>
<CAPTION>
- - -------------------------------------------------------------------------------------------------------------
     (a)             (b)               (c)                      (d)                           (e)
- - -------------------------------------------------------------------------------------------------------------
NAME            SHARES            VALUE REALIZED      NUMBER OF SECURITIES          VALUE OF UNEXERCISED
                ACQUIRED ON       ($)                 UNDERLYING UNEXERCISED        IN-THE-MONEY OPTIONS/SARs
                EXERCISE (#)                          OPTIONS/SARs AT FY-END        AT FY-END ($)
                                                      (#)

                                                      EXERCISABLE/UNEXERCISABLE     EXERCISABLE/UNEXERCISABLE
- - -------------------------------------------------------------------------------------------------------------
<S>             <C>               <C>                 <C>                           <C>
     N/A *           --                 --                      --                            --

- - -------------------------------------------------------------------------------------------------------------
</TABLE>

*    The Company had previously granted an option to purchase shares in the
     Company at $2.25 to a former officer. These options were cancelled in 1997
     and were not replaced.


                                  Page 5 of 86
<PAGE>


(d)  Long-term Incentive Plans - Awards in Last Fiscal Year

<TABLE>
<CAPTION>
- - -------------------------------------------------------------------------------------------------------------
                                                                        ESTIMATED FUTURE PAYOUTS UNDER NO
                                                                        STOCK PRICED-BASED PLANS
- - -------------------------------------------------------------------------------------------------------------
(a)                 (b)                       (c)                       (d)            (e)           (f)
- - -------------------------------------------------------------------------------------------------------------
NAME                NUMBER OF SHARES,         PERFORMANCE OR            THRESHOLD      TARGET        MAXIMUM
                    UNITS OR OTHER            OTHER PERIOD              ($ OR #)       ($ OR #)      ($ OR #)
                    RIGHTS (3)                UNTIL MATURATION
                                              OR PAYOUT
- - -------------------------------------------------------------------------------------------------------------
<S>                 <C>                       <C>                       <C>            <C>           <C>
     N/A                   --                        --                     --            --            --

- - -------------------------------------------------------------------------------------------------------------
</TABLE>

(e)  Compensation of Directors

     Allan D. Erickson and Lawrence M. Martin are each paid an annual retainer
     of $1,000, as well as fees in the amount of $200 per meeting for their
     services as directors of the Company. None of the other directors receive
     compensation for their services as directors.

(f)  Employment Contracts and Termination of Employment/Change in Control
     Arrangements

     The Company does not have any compensatory plan or arrangement regarding
     the termination of any executive officer or regarding a change in control
     of the Company.

ITEM 7. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

The Company has not entered into any transaction during the last two years to
which the Company was a party in which any director or executive officer or
nominees thereof or securities holders or members of their immediate families
were also involved or have a direct or indirect material interest.

ITEM 8. DESCRIPTION OF SECURITIES.

The Company has authorized the issue of one class of common stock. As of the
date of this report, 888,180 shares of common stock were issued and outstanding.

Dividends are payable on such stock as and when declared. Each share entitles
the holder thereof to one vote. There are no preemptive rights with respect to
this stock. The Company has not issued any debt securities.


                                  Page 6 of 86
<PAGE>


                                     PART II

ITEM 1. MARKET PRICE OF AND DIVIDENDS ON THE REGISTRANT'S COMMON EQUITY AND
RELATED STOCKHOLDER MATTERS.

The Company's common equity is traded principally on the OTCBB Bulletin Board
service. The high and low bids on the Company's common equity for each quarter
in the last two fiscal years and subsequent interim periods are set out in the
following table.

            -------------------------------------------------------
             FISCAL YEAR           HIGH              LOW
            -------------------------------------------------------
             1997 Q1               $2.50             $2.50
            -------------------------------------------------------
             1997 Q2               $2.50             $2.50
            -------------------------------------------------------
             1997 Q3               $2.50             $2.50
            -------------------------------------------------------
             1997 Q4               $2.50             $2.50
            -------------------------------------------------------
             1998 Q1               $2.50             $1.50
            -------------------------------------------------------
             1998 Q2               $1.50             $0.25
            -------------------------------------------------------
             1998 Q3               $0.25             $0.25
            -------------------------------------------------------
             1998 Q4               $0.25             $0.11
            -------------------------------------------------------
             1999 Q1               $0.11             $0.10
            -------------------------------------------------------
             1999 Q2               $0.10             $0.10
            -------------------------------------------------------
             1999 Q3               $0.16             $0.10
            -------------------------------------------------------

Note that these are over-the-counter market quotations, which reflect
inter-dealer prices without retail mark-up, mark-down or commission, and may not
represent actual transactions. There are approximately 300 holders of record of
the common stock of the Company.

No dividends have been declared on the common stock of the Company within the
last two fiscal years or any subsequent interim period.

There are no restrictions that limit the ability to pay dividends on the common
stock or that are likely to do so in the future.

ITEM 2. LEGAL PROCEEDINGS.

The Company is not presently party to any pending legal proceeding, and its
property is not the subject of any pending legal proceeding.

ITEM 3. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS.

No independent accountant whose services were employed by the Company or any
independent accountant on whom the report is relied on by the Company have
resigned or been dismissed in the two most recent fiscal years or subsequent
interim periods.


                                  Page 7 of 86
<PAGE>


ITEM 4. RECENT SALES OF UNREGISTERED SECURITIES.

The Company has not offered or issued securities to the public within the last
three years.

ITEM 5. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

The Company provides liability insurance for directors and officers of the
Company. The current annual premium is approximately $1,400 for directors and
officers, all of which was paid by the Company. The policy limit is $5,000,000
with a deductible of $50,000. The individual directors and officers of the
Company and its subsidiaries are insured from claims against them for certain of
their acts, errors or omissions. The Company is insured against any loss arising
out of any liability to indemnify the directors or officers.


                                    PART III

ITEM 1. EXHIBITS AND INDEX TO EXHIBITS

(a)  EXHIBITS

     The Articles of Incorporation of the Company, its By-laws and all
     amendments thereto, are specifically incorporated herein by reference and
     form an integral part of this Form for Registration of Securities.

     The rights of securities holders are set out in their entirety in the
     above-referenced documents and are again incorporated herein by reference
     under the classification of Instruments Defining the Rights of Holders.

     The Company is not subject to any voting trust agreements.

     As the Company is essentially inactive at the time of this filing, it is
     not currently party to any material contracts aside from a monthly lease
     for a small office space. A copy of the lease document and other related
     documents are attached.

     The Company was party to two separate material contracts in the last two
     years wherein the Company disposed of substantially all of its assets.
     Copies of these documents are also attached.

     A statement regarding the computation of share earnings has not been
     included in this Form for Registration of Securities, as the primary and
     fully-diluted share earnings are identical and can be clearly determined
     from the financial statements provided.

     A Financial Data Schedule is also included.


                                  Page 8 of 86
<PAGE>


(b)  INDEX TO EXHIBITS
                                                       Page
     1.   (i)   Articles of Incorporation              incorporated by reference
          (ii)  By-laws                                incorporated by reference
     2.   Instruments defining the rights of holders   incorporated by reference
     3.   Material Contracts                           26
     4.   Financial Data Schedule                      83-86

                                   SIGNATURES

Pursuant to the requirements of Section 12 of the Securities Exchange Act of
1934, the registrant has duly caused this registration statement to be signed on
its behalf by the undersigned, thereunto duly authorized.


                                       Bison Instruments, Inc.

Date:                                  By: /s/ Edward G. Lampman
                                           -------------------------------------
                                           (Signature)

                                       Edward G. Lampman
                                       -----------------------------------------
                                       (Print Name of Signing Officer)


                                       Chief Executive Officer
                                       -----------------------------------------
                                       (Title of Signing Officer)


                                  Page 9 of 86
<PAGE>


                             BISON INSTRUMENTS, INC.

                                  BALANCE SHEET

                                  JULY 31, 1999

<TABLE>
<CAPTION>

UNAUDITED (000's)                                        1999            1998
- - ---------------------------------------------------------------------------------
<S>                                                   <C>             <C>
ASSETS
     Cash                                             $       134     $       116
     Accounts receivable                                       --              75
     Inventory                                                 --              86
     Prepaid expenses                                          --              26
     Fixed                                                     --              27
                                                      -----------     -----------
                                                      $       134     $       330
                                                      ===========     ===========

LIABILITIES
     Accounts payable and accruals                    $        --     $        96
     Loan payable                                              --             100
                                                      -----------     -----------
                                                               --             196
                                                      -----------     -----------

SHAREHOLDERS EQUITY
     Capital stock                                          1,003           1,003
     Deficit                                                 (869)           (869)
                                                      -----------     -----------
                                                              134             134
                                                      -----------     -----------

                                                      $       134     $       330
                                                      ===========     ===========
</TABLE>

                                 Page 10 of 86
<PAGE>


                             BISON INSTRUMENTS, INC.

                         STATEMENT OF INCOME AND DEFICIT

                         NINE MONTHS ENDED JULY 31, 1999

<TABLE>
<CAPTION>

UNAUDITED (000's)                                           1999           1998
- - ----------------------------------------------------------------------------------
<S>                                                     <C>            <C>
Sales                                                   $       32     $      487

Cost of sales and operating expenses                            44            669
                                                        ----------     ----------

                                                               (12)          (182)

Gain on disposal of product line                                96            114
                                                        ----------     ----------

Net income (loss) for the period                                84            (68)

Deficit, beginning of period                                  (953)          (801)
                                                        ----------     ----------

Deficit, end of period                                  $     (869)    $     (869)
                                                        ==========     ==========

INCOME (LOSS) PER SHARE                                 $     0.09     $    (0.08)
                                                        ==========     ==========
</TABLE>

                                 Page 11 of 86
<PAGE>


                             BISON INSTRUMENTS, INC.

                             STATEMENT OF CASH FLOWS

                         NINE MONTHS ENDED JULY 31, 1999

<TABLE>
<CAPTION>

UNAUDITED (000's)                                          1999           1998
- - ---------------------------------------------------------------------------------
<S>                                                    <C>            <C>
     Net income (loss)                                 $       84     $      (68)
     Depreciation                                              --             45
     Gain on disposal of a product line                       (96)          (105)
     Gain on disposal of fixed assets                          --            (11)
     Other non-cash items                                     (74)          (384)
                                                       ----------     ----------
                                                              (86)          (523)
                                                       ----------     ----------

     Proceeds on disposal of
     fixed assets and a product line                          187            530
                                                       ----------     ----------
                                                              187            530
                                                       ----------     ----------

     Increase in cash                                         101              7

     Cash, beginning of period                                 33            109
                                                       ----------     ----------

     Cash, end of period                               $      134     $      116
                                                       ==========     ==========
</TABLE>

                                 Page 12 of 86
<PAGE>


                                    PART F/S

                        Financial Statements of


                        BISON INSTRUMENTS, INC.


                        Years ended October 31, 1998 and 1997



                                 Page 13 of 86
<PAGE>


AUDITORS' REPORT


To the Directors and Stockholders of Bison Instruments, Inc.


We have audited the balance sheets of Bison Instruments, Inc. as at October 31,
1998 and 1997 and the statements of operations and deficit and cash flows for
the years then ended. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform an audit to obtain
reasonable assurance whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.

In our opinion, these financial statements present fairly, in all material
respects, the financial position of the Company as at October 31, 1998 and 1997
and the results of its operations and its cash flows for the years then ended in
accordance with generally accepted accounting principles in the United States.


KPMG

Chartered Accountants

Toronto, Canada
December 9, 1998


                                 Page 14 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Balance Sheets
(Expressed in United States dollars)

<TABLE>
<CAPTION>

October 31, 1998 and 1997
- - -----------------------------------------------------------------------------------------------
                                                                          1998            1997
- - -----------------------------------------------------------------------------------------------
<S>                                                                <C>             <C>
ASSETS

Current assets:
      Cash                                                         $    33,199     $   109,117
      Accounts receivable                                               16,167         307,691
      Inventories (note 3)                                              79,000         319,100
      Current portion of notes receivable                                   --         151,667
      Prepaid expenses and other assets                                  2,226          38,494
      -----------------------------------------------------------------------------------------
                                                                       130,592         926,069

Fixed assets (note 4)                                                       --         118,586

- - -----------------------------------------------------------------------------------------------
                                                                   $   130,592     $ 1,044,655
===============================================================================================

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
      Accounts payable and accrued liabilities                     $    80,120     $   306,986
      Accrued wages and commissions                                         --          84,723
      Loan payable (note 6)                                                 --         450,560
- - -----------------------------------------------------------------------------------------------
                                                                        80,120         842,269

Stockholders' equity (note 7):
      Capital stock:
            Authorized: 2,000,000 common shares, $.10 par value
            Issued and outstanding: 889,890 common shares               88,989          88,989
      Capital in excess of par value                                   914,002         914,002
      Deficit                                                         (952,519)       (800,605)
      -----------------------------------------------------------------------------------------
                                                                        50,472         202,386

Operations (note 1)

- - -----------------------------------------------------------------------------------------------
                                                                   $   130,592     $ 1,044,655
===============================================================================================
</TABLE>


See accompanying notes to financial statements.


On behalf of the Board:


/s/ Edward G. Lampman         Director
- - ----------------------------

/s/ Lawrence M. Martin        Director
- - ----------------------------


                                 Page 15 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Statements of Operations and Deficit
(Expressed in United States dollars)

<TABLE>
<CAPTION>

Years ended October 31, 1998 and 1997
- - -------------------------------------------------------------------------------------
                                                                1998            1997
- - -------------------------------------------------------------------------------------
<S>                                                      <C>             <C>
Sales                                                    $   519,733     $ 2,554,416

Cost of goods sold                                           255,583       1,721,711
- - -------------------------------------------------------------------------------------

Gross profit                                                 264,150         832,705

Operating expenses:
      Selling, general and administrative                    553,293       1,027,131
      New product line development                                --         563,337
      Provision for restructuring (note 8)                   (18,717)        377,734
      -------------------------------------------------------------------------------
                                                             534,576       1,968,202
- - -------------------------------------------------------------------------------------

Operating loss                                              (270,426)     (1,135,497)

Other income (expense) (note 1)                              118,512         (67,256)
- - -------------------------------------------------------------------------------------

Loss before income taxes                                    (151,914)     (1,202,753)

Income taxes (note 9)                                             --          95,000
- - -------------------------------------------------------------------------------------

Loss for the year                                           (151,914)     (1,297,753)

Retained earnings (deficit), beginning of year              (800,605)        497,148

- - -------------------------------------------------------------------------------------
Deficit, end of year                                     $  (952,519)    $  (800,605)
=====================================================================================

Loss per share                                           $     (.171)    $    (1.458)
=====================================================================================
</TABLE>


See accompanying notes to financial statements.


                                 Page 16 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Statements of Cash Flows
(Expressed in United States dollars)

<TABLE>
<CAPTION>

Years ended October 31, 1998 and 1997
- - -------------------------------------------------------------------------------------------------
                                                                            1998            1997
- - -------------------------------------------------------------------------------------------------
<S>                                                                  <C>             <C>
Cash provided by (used in):

Cash flows from operating activities:
      Loss for the year                                              $  (151,914)    $(1,297,753)
      Adjustments to reconcile net loss to net cash
         provided by (used in) operating activities:
            Depreciation                                                  59,974         101,303
            Gain on disposal of product lines                           (105,465)             --
            Gain on disposal of fixed assets                             (10,905)             --
            Deferred income taxes                                             --          95,000
            Loss on disposition of equipment held for rental                  --           5,370
      -------------------------------------------------------------------------------------------
                                                                        (208,310)     (1,096,080)
      Changes in non-cash working capital balances
         related to operations:
            Accounts receivable                                          291,524         253,265
            Notes receivable                                             151,667         192,155
            Inventories                                                  (82,882)        667,410
            Prepaid expenses and other assets                             36,268          40,000
            Accounts payable and accrued liabilities                    (226,866)       (306,012)
            Accrued wages and commissions                                (84,723)         38,658
      -------------------------------------------------------------------------------------------

      Net cash (used in) provided by operating activities               (123,322)       (210,604)

Cash flows from investing activities:
      Proceeds on disposal of fixed assets                                37,382              --
      Proceeds on disposal of product lines                              466,094              --
      Capital expenditures                                                (5,512)        (31,527)
      -------------------------------------------------------------------------------------------
                                                                         497,964         (31,527)

Cash flows from financing activities:
      Loan payable                                                      (450,560)        450,560
      Line of credit                                                          --        (150,000)
      -------------------------------------------------------------------------------------------

      Net cash provided by financing activities                         (450,560)        300,560
- - -------------------------------------------------------------------------------------------------

Net increase (decrease) in cash                                          (75,918)         58,429

Cash, beginning of year                                                  109,117          50,688

- - -------------------------------------------------------------------------------------------------
Cash, end of year                                                    $    33,199     $   109,117
=================================================================================================

Supplemental information:
Cash paid for interest                                               $        --     $    25,614
Notes receivable obtained on sale of equipment                       $        --     $    48,513

=================================================================================================
</TABLE>

See accompanying notes to financial statements.


                                 Page 17 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Notes to Financial Statements
(Expressed in United States dollars)

Years ended October 31, 1998 and 1997

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


Bison Instruments, Inc. (the "Company") was engaged in the manufacture of
geophysical and other measurement instruments, sold internationally, until the
end of this fiscal year. Andus Inc. owns approximately 66.9% of the Company's
outstanding common stock. Andus is a subsidiary of Autrex Inc. of Toronto,
Canada.


1.   GAIN ON DISPOSAL OF PRODUCT LINES AND FIXED ASSETS:

     On June 5, 1998, Bison sold the seismic products lines, including all
     inventory and intellectual property associated therewith, to a third party
     resulting in a net gain on disposal of product lines and fixed assets of
     $116,370.

     An agreement to sell the Mu-Meter product line, including inventory and
     intellectual property rights, for $179,000 was entered into on October 23,
     1998, and closed in November 1998 with a net gain of approximately $90,000
     being recognized in the first quarter of 1999.

     At October 31, 1998, the operations of Bison had essentially ceased and the
     corresponding assets were written down to net realizable value.


2.   SIGNIFICANT ACCOUNTING POLICIES:

     (a)  Inventories:

          Inventories are stated at the lower of cost and net realizable value.

     (b)  Fixed assets:

          There are no remaining fixed assets at October 31, 1998. Depreciation
          has been provided throughout the year using the following methods and
          useful lives:

          ----------------------------------------------------------------------
                                                                       Useful
          Asset                             Basis                       lives
          ----------------------------------------------------------------------

          Shop equipment                    Straight line          2-10 years
          Furniture and fixtures            Straight line           3-5 years
          Leasehold improvements            Straight line             3 years
          Equipment held for rental         Straight line             3 years

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

     (c)  Product warranty costs:

          Anticipated future costs of product warranties were charged to
          operations in the year the product was sold.


                                 Page 18 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Notes to Financial Statements (continued)
(Expressed in United States dollars)

Years ended October 31, 1998 and 1997

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


2.   SIGNIFICANT ACCOUNTING POLICIES (CONTINUED):

     (d)  Income taxes:

          The Company accounts for income taxes in accordance with the Financial
          Accounting Standards Board Statement of Financial Accounting Standards
          No. 109, Accounting for Income Taxes. Under the asset and liability
          method of Statement 109, deferred tax assets and liabilities are
          recognized for the future tax consequences attributable to differences
          between the financial statement carrying amounts of existing assets
          and liabilities and their respective tax bases. Deferred tax assets
          and liabilities are measured using enacted tax rates expected to apply
          to taxable income in the years in which those temporary differences
          are expected to be recovered or settled. The effect on deferred tax
          assets and liabilities of a change in tax rates is recognized in
          income in the period that includes the enactment date.

     (e)  Fair value of financial assets and financial liabilities:

          The fair value of the Company's cash, accounts receivable, notes
          receivable, accounts payable and accrued liabilities approximates
          their carrying amounts due to the relatively short periods to maturity
          of the instruments.

     (f)  Use of estimates:

          These financial statements are prepared in accordance with generally
          accepted accounting principles which require management to make
          estimates and assumptions which affect the reported amounts of assets
          and liabilities at the date of the financial statements and the
          reported amounts of income, expenses and changes in financial position
          for the year. Actual results could differ from these estimates.

      (g) Earnings per share:

          The earnings per share computations are based on the weighted average
          number of common shares outstanding during each year (889,890 shares).


     3.   INVENTORIES:

          Inventories consist of the following:

          ----------------------------------------------------------------------
                                                          1998             1997
          ----------------------------------------------------------------------

          Finished goods                           $    79,000      $   165,548
          Work-in-process                                   --           43,481
          Raw materials                                     --          110,071

          ----------------------------------------------------------------------
                                                   $    79,000      $   319,100
          ======================================================================


                                 Page 19 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Notes to Financial Statements (continued)
(Expressed in United States dollars)

Years ended October 31, 1998 and 1997

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


4.   FIXED ASSETS:

     Fixed assets consist of the following:

<TABLE>
<CAPTION>
      ----------------------------------------------------------------------------------------------
                                                                             1998              1997
      ----------------------------------------------------------------------------------------------
                                                    Accumulated          Net book          Net book
                                         Cost      depreciation             value             value
      ----------------------------------------------------------------------------------------------
<S>                                <C>              <C>               <C>               <C>
      Shop equipment               $       --       $        --       $        --       $    23,393
      Furniture and fixtures               --                --                --            26,032
      Leasehold improvements               --                --                --             1,938
      Equipment held for rental            --                --                --            67,223

      ----------------------------------------------------------------------------------------------
                                   $       --       $        --       $        --       $   118,586
      ==============================================================================================
</TABLE>


5.   RELATED PARTY TRANSACTIONS:

     The Company accrued management fees of $25,000 (1997 - nil) to Autrex Inc.
     Included in accrued liabilities is $25,000 (1997 - $14,931) payable to
     Autrex Inc.


6.   LOAN PAYABLE:

     The non-interest bearing loan payable to Autrex Inc. was repaid during the
     year.


7.   STOCKHOLDERS' EQUITY:

     In 1995, the Company granted to an officer an option to purchase 50,000
     shares of the Company at $2.25 per share. The options vest at the rate of
     10,000 on January 7 of each year from 1995 to 1998 inclusive and expire on
     January 7, 2001. On July 23, 1997, these 50,000 stock options were
     cancelled and not replaced.


8.   RESTRUCTURING EXPENSES:

     During 1997, the Company commenced reorganizing and downsizing its
     operations. Certain product lines were eliminated, resulting in inventory
     writedowns of $257,000, other intangible assets in the amount of $33,000
     were written off, and severance payments and other related expenses of
     $88,000 were accrued in the 1997 financial statements. Of the $88,000,
     approximately $70,000 was paid out by October 31, 1998; the remaining
     $18,000 was taken into income this year.


                                 Page 20 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Notes to Financial Statements (continued)
(Expressed in United States dollars)

Years ended October 31, 1998 and 1997

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


9.   INCOME TAXES:

     Income tax expenses in the 1997 fiscal year were the result of an increase
     in the valuation allowance for deferred tax debits representing loss
     carryforwards for which a future benefit is no longer probable.

     The tax effects of temporary differences that give rise to significant
     portions of deferred tax assets and deferred tax liabilities at October 31,
     1998 and October 31, 1997 are presented below:

<TABLE>
<CAPTION>
     ------------------------------------------------------------------------------------------------------
                                                                                 1998                1997
     ------------------------------------------------------------------------------------------------------
<S>                                                                     <C>                 <C>
     Deferred tax assets primarily attributable to losses available
        for carryforward, reserves on receivables and
        non-deductible accruals                                         $   1,400,000       $   1,200,000
     Less valuation allowance                                              (1,400,000)         (1,200,000)
     ------------------------------------------------------------------------------------------------------
                                                                                   --                  --

     Deferred tax liabilities primarily attributable to excess
        tax depreciation over financial reporting depreciation                     --                  --

     ------------------------------------------------------------------------------------------------------
     Net deferred tax asset                                             $          --       $          --
     ======================================================================================================
</TABLE>


10.  RETIREMENT PLAN:

     The Company has a 401(k) defined contribution retirement plan which is
     available to all company employees who have reached age 21 and completed
     six months of employment. Employer contributions to a maximum of 4% of
     qualified compensation are made at a rate of 50% of employees'
     contributions. Expenses incurred by the Company related to such
     contributions were $6,950 (1997 - $22,650).


                                 Page 21 of 86
<PAGE>


BISON INSTRUMENTS, INC.
Notes to Financial Statements (continued)
(Expressed in United States dollars)

Years ended October 31, 1998 and 1997

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


11.  SEGMENT OF BUSINESS:

     The Company's operations are in one principal segment - the manufacture and
     sale of geophysical and other measurement instrumentation. A breakdown of
     sales by geographic area for the year is as follows:

     ---------------------------------------------------------------------------
                                                       1998               1997
     ---------------------------------------------------------------------------

     Domestic customers                      $      339,358      $   1,193,859
     Foreign customers:
           Europe                                    76,704            401,745
           Canada                                    91,191            406,919
           Asia                                       2,262            256,479
           Argentina                                  1,202                 --
           South America                              1,468            159,545
           All other                                  7,548            135,869

     ---------------------------------------------------------------------------
                                             $      519,733      $   2,554,416
     ===========================================================================

Sales amounts reported include instrument rental income of $116,256 (1997 -
$151,980).


                                 Page 22 of 86



                                                                    EXHIBIT 10.1


                           LEASE TERMINATION AGREEMENT

THIS AGREEMENT, made and entered into this 18th day of June, 1998, by and
between LIBERTY PROPERTY LIMITED PARTNERSHIP, a Pennsylvania limited partnership
(hereinafter called "Landlord") and BISON INSTRUMENTS, a Minnesota corporation
(hereinafter called "Tenant").

                                   WITNESSETH:

WHEREAS, LANDLORD AND TENANT ENTERED INTO A LEASE DATED JULY 20, 1994 ("LEASE"),
COVERING CERTAIN PREMISES KNOWN AS SUITE 145 AND CONSISTING OF APPROXIMATELY
10,165 SQUARE FEET OF SPACE ("PREMISES") IN THE BUILDING LOCATED AT 5610 ROWLAND
POND, MINNETONKA, MINNESOTA ("BUILDING"), WHICH PREMISES ARE MORE PARTICULARLY
DESCRIBED IN SAID LEASE; AND

WHEREAS, Landlord and Tenant now desire to terminate the Lease pursuant to the
terms and conditions contained herein.

NOW, THEREFORE, in consideration of the preambles and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto agree as follows:

1.       The Lease is hereby terminated as of October 1, 1998 (the "Effective
         Date"), and thereafter the parties shall have no rights, duties or
         obligations under the Lease and are hereby released therefrom, except
         those which are expressly stated in the Lease to survive the
         termination of the Lease.

2.       In consideration of Landlord's agreement to terminate the Lease as set
         forth in Section 1, Tenant hereby agrees to pay to Landlord the
         following amounts:

         a)       A termination fee of $25,000.00, which will be paid as of the
                  date of this Agreement;

         b)       All rent due and unpaid under the Lease as of the date of this
                  Agreement, totaling $18,259.96; and

         c)       All rent due under the Lease from the date of this Agreement
                  to the Effective Date, totaling $27,389.94. The parties agree
                  that Landlord shall apply Tenant's security deposit under the
                  Lease, in the amount of $5,481.00, to the amount owed under
                  this Sub-Section C. Tenant shall pay to Landlord the balance
                  owed of $21,908.94 by no later than July 1, 1998.

3.       This Agreement shall be governed by and construed under the laws of the
         State of Minnesota.

4.       This Agreement shall not be binding until executed by all parties
         hereto.


                                 Page 23 of 86
<PAGE>


IN WITNESS WHEREOF, the parties have caused this Agreement to be executed as of
the date first above written.

                                       LANDLORD:

                                       LIBERTY PROPERTY LIMITED
                                       PARTNERSHIP


                                       By:  /s/ Doug Johnson
                                            ------------------------------------

                                       Its: Vice President
                                            ------------------------------------

                                       TENANT:

                                       BISON INSTRUMENTS


                                       By:  /s/ Lawrence M. Martin
                                            ------------------------------------

                                       Its: General Manager
                                            ------------------------------------


                                 Page 24 of 86
<PAGE>


                               SUBLEASE AGREEMENT

This Sublease Agreement ("Sublease"), made and entered into this 18th day of
June, 1998, by and between BISON INSTRUMENTS, a Minnesota corporation
("Sublessor'), and ENDURATEC SYSTEMS CORP., a Minnesota corporation ("Tenant").

WITNESSETH:

WHEREAS, Sublessor entered into that certain Lease dated July 20, 1994 (the
"Prime Lease"), by and between MARFIELD, BELGARDE & YAFFE ("Landlord"), as
landlord, and Sublessor, as tenant, for certain premises ("Premises") in the
building located at 5610 Rowland Pond, Minnetonka, Minnesota, a true and correct
copy of which is attached hereto as Exhibit A and made a part hereof; and

WHEREAS, Sublessor desires to sublease to Tenant that portion of the Premises
which is identified by crosshatch on the attached Exhibit B ("Subleased
Premises"), and Tenant desires to sublease the same from Sublessor, upon the
terms and conditions hereinafter set forth.

NOW, THEREFORE, in consideration of the premises, the mutual covenants and
agreements herein contained, and of other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, it is hereby agreed by
and between the parties hereto as follows:

1. SUBLEASED PREMISES. Sublessor hereby leases unto Tenant, and Tenant hereby
takes from Sublessor, in its "as is" condition the Subleased Premises.

2. TERM. The term of this Sublease shall commence on July 1, 1998, and shall
terminate as of October 1st, 1998.

3. RENT. As monthly rent ("Rent") for the Subleased Premises, Tenant will pay
monthly rent in an amount equal to 50% of Sublessor's monthly installments of
Minimum Annual Rent, Annual Operating Expenses, Taxes and other Impositions, and
other additional rent for the Premises. Tenant's Rent shall be payable in
advance, without abatement, deduction or setoff, on the Commencement Date and on
the first day of each calendar month thereafter during the Sublease Term. The
Rent as to any partial months included in the Sublease Term shall be prorated on
a daily basis.

4. ASSUMPTION OF OBLIGATIONS. Except for the rent due under the Prime Lease and
except as otherwise set forth in this Sublease, Tenant assumes and agrees to
keep, obey and perform all of the terms, covenants and conditions of Sublessor
as Tenant under the Prime Lease with respect o the Subleased Premises. Any
failure by Tenant to perform, keep and obey the same shall be a default
hereunder. It is hereby understood and agreed that Tenant's rights to use,
possess and enjoy the Subleased Premises are subject to the terms and conditions
of the Prime Lease and the rights and remedies of Landlord thereunder.


                                 Page 25 of 86
<PAGE>


5. TITLE AND POSSESSION. Sublessor covenants and agrees that it has full right
and authority to enter into this Sublease for the full term hereof, and that
Tenant, upon paying the rents and other sums provided herein, and upon
performing the duties, covenants, agreements and obligations hereof, and upon
keeping and obeying all of the restrictions, conditions and provisions hereof,
will have, hold and enjoy quiet possession of the Subleased Premises for the
term herein granted and with all of the rights and privileges of Sublessor under
the Prime Lease with respect to the Subleased Premises except as herein
expressly excluded or modified and subject to all of said duties, covenants,
agreements, obligations, restrictions, conditions and provisions.

6. SUBLEASE AND ASSIGNMENT. It is mutually agreed that Tenant may not assign
this Sublease or further sublease any portion of the Subleased Premises without
the prior written consent of Sublessor and Landlord. Tenant shall not pledge its
interest hereunder, or allow liens to be placed on such interest, or suffer this
Sublease or any portion thereof to be attached or taken upon execution. No
assignment or further subleasing, even with the consent of Sublessor and
Landlord, shall relieve Tenant from liability for payment of the rent herein
provided for or from the obligation to keep and be bound by all of the terms,
conditions and covenants of this Sublease.

7. DAMAGE, DESTRUCTION OR CONDEMNATION. In the event of damage or destruction of
the Subleased Premises or the taking of all or any part thereof under the power
of eminent domain, this Sublease shall terminate if, but only if, the Prime
Lease is terminated as a result thereof, and the rent payable hereunder shall
abate only as long as and in the same proportion as the rent due from Sublessor
to Landlord under the Prime Lease abates as a result thereof.

8. MUTUAL RELEASE AND WAIVER OF SUBROGATION. Notwithstanding any provision of
this Sublease to the contrary, all parties hereby waive any and all rights of
recovery, claim, action or cause of action, against the others and against
Landlord, their agents (including partners, both general and limited), officers,
directors, shareholders or employees, for any loss or damage that may occur to
the Subleased Premises, or any improvements thereto, or the building of which
the Subleased Premises are a part, or any improvements thereto, or any property
of such party herein, by reason of fire, the elements, or any other cause which
could be insured against under the terms of standard fire and extended coverage
insurance policies, regardless of cause or origin, including negligence of the
other party hereto, its agents, officers or employees, and each covenants that
its insurers shall hold no right of subrogation against any other party.

9. ALTERATIONS. Any alterations, additions and improvements in or upon the
Subleased Premises shall be made by Tenant only after prior written consent by
Sublessor, which consent shall not be withheld if Landlord consents thereto.
Upon the termination of the term hereof, all such alterations, additions and
improvements (except personal property, business and trade fixtures, machinery
and equipment, furniture and movable partitions owned by Tenant) shall be and
remain part of the Subleased Premises and shall not be removed by Tenant unless
such removal is required by Sublessor, in which case Tenant shall remove the
same and restore the Subleased Premises to the same condition in which they were
on the date hereof, reasonable and


                                 Page 26 of 86
<PAGE>


ordinary wear and tear excepted. Personal property, business and trade fixtures,
machinery and equipment, furniture and movable partitions owned by Tenant shall
be and remain the property of Tenant and may be removed by Tenant at any time
during the term hereof when Tenant is not in default hereunder. Tenant covenants
and agrees to indemnify Sublessor and Landlord against, and hold Sublessor and
Landlord harmless from, all liens, whether for labor or materials arising as the
result of alterations, additions, repairs, or improvements to the Subleased
Premises made by Tenant during the term of this Sublease.

10. DEFAULT. If the rent above referred to, or any part thereof, whether the
same be demanded or not, shall remain unpaid for a period of 5 days from the
date when due hereunder, or if any other term, condition or covenant of this
Sublease, express or implied on the part of Tenant to be kept or performed shall
be violated or neglected, and if Tenant shall fail to cure the same within ten
days from the date of written notice from Sublessor to Tenant specifying the
violations, or if the Subleased Premises or Tenant's interest therein shall be
taken on execution or other process of law, or if Tenant shall petition to be or
shall be declared bankrupt or insolvent according to law or shall enter an
assignment for the benefit of creditors, or if Tenant shall abandon the
Subleased premises, or if any default under the Prime Lease shall occur with
respect to Tenant or the performance by Tenant of any of its covenants and
obligations under this Sublease, then and in any of said cases, Tenant shall be
deemed in default, and Sublessor shall have all of the rights and remedies
against Tenant which would be available to Landlord against Sublessor in the
event of a default by Sublessor under the Prime Lease.

11. NOTICES. Any notice or communication required or permitted to be given or
served by either party hereto upon the other shall be deemed given or served in
accordance with the provisions of this Sublease when mailed in a sealed wrapper
by United States registered or certified mail, return receipt requested, postage
prepaid, property addressed as follows:

    If to Sublessor:       Bison Instruments
                           5610 Rowland Road
                           Minnetonka, MN 55343

    If to Tenant:          EnduraTEC Systems Corporation
                           5610 Rowland Pond Road
                           Minnetonka, MN 55343

Each such mailed notice or communication shall be deemed to have been given to,
or served upon, the party to which addressed on the date the same is deposited
in the United States registered or certified mail, postage prepaid, property
addressed in the manner above provided. Any party hereto may change its address
for the service of notice hereunder by serving written notice hereunder upon the
other party hereto, in the manner specified above, at least ten (10) days prior
to the effective date of such change.

12. SURRENDER OF SUBLEASED PREMISES UPON EARLY TERMINATION. Upon any early
termination of this Sublease, Tenant shall quit and surrender possession of the


                                 Page 27 of 86
<PAGE>


Subleased Premises to Sublessor in as good order and condition as the same are
now or hereafter may be improved by Landlord, Sublessor or Tenant, reasonable
wear and tear and repairs which are Landlord's obligation excepted, and shall,
without expense to Sublessor, remove or cause to be removed from the Subleased
Premises all debris and rubbish, all furniture, equipment, business and trade
fixtures, movable partitioning and other articles or personal property owned by
Tenant or installed or placed by Tenant at its expense in the Subleased
Premises, and all similar articles of any other persons claiming under Tenant,
and Tenant shall repair all damage to the Subleased Premises resulting from such
removal.

13. TERMINATION OF PRIME LEASE. It is understood and agreed by and between the
parties hereto that the existence of this Sublease is dependent and conditioned
upon the continued existence of the Prime Lease, and in the event of the
cancellation or termination of the Prime Lease, this Sublease automatically
shall be terminated; provided, however, that this provision shall not be deemed
to release Sublessor from liability if the Prime Lease is cancelled or
terminated by reason of a default by Sublessor as tenant under the Prime Lease,
which default did not result, in whole or in part, from a default by Tenant
hereunder. Sublessor shall have no liability to Tenant if the Prime Lease is
cancelled or terminated by reason of a default by Tenant hereunder, or by reason
of any condemnation or destruction of the Subleased Premises.

14. WAIVER. A waiver by Sublessor of any default, breach or failure of Tenant
under this Sublease shall not be construed as a waiver of any subsequent or
different default, breach or failure.

15. HOLDING OVER. If Tenant holds over after the early termination of the term
hereof without the express written consent of Sublessor, Tenant shall become a
tenant at sufferance only, at a rental rate equal to 150% of the rental rate in
effect upon the date of such expiration and otherwise upon the terms, covenants
and conditions herein specified, so far as applicable. Acceptance by Sublessor
of rent after such expiration or earlier termination shall not constitute a
consent to a holdover hereunder or result in a renewal. The foregoing provisions
of this paragraph are in addition to, and shall not limit, Sublessor's right of
reentry or any other rights of Sublessor hereunder or as otherwise provided by
law. In the event of any unauthorized holding over, Tenant shall indemnify
Sublessor against all claims for damages arising therefrom.

16. SUCCESSORS AND ASSIGNS. All of the terms, covenants, provisions and
conditions of this Sublease shall be biding upon and inure to the benefit of the
parties hereto and their respective successors and permitted assigns.

17. CAPTIONS. The captions used on the paragraphs of this Sublease are for
convenience only, are not a part of this Sublease, and are not to be considered
in the interpretation hereof.

18. CONSENT OF LANDLORD. This Sublease is contingent upon approval by Landlord
manifested by Landlord's execution of the Consent to Sublease appearing below.
Unless and until Landlord executes the Consent to Sublease below, this Sublease
shall be of no force or effect, and the parties hereto shall have no liability
or obligation to each


                                 Page 28 of 86
<PAGE>


other. Tenant shall not be permitted access to the Subleased Premises for any
purpose until the Consent to Sublease below has been executed by Landlord.

19. RELATIONSHIP OF PARTIES. This Sublease does not and shall not create the
relationship of principal and agent, or of partnership, or of joint venture, or
of any other association between Sublessor and Tenant, the sole relationship
between the parties hereto being strictly that of landlord and tenant.

IN WITNESS WHEREOF, the parties hereto have caused these presents to be executed
as of the day and year first above written.

                                       SUBLESSOR:

                                       BISON INSTRUMENTS


                                       By:  /s/ Lawrence M. Martin
                                            ------------------------------------

                                       Its: General Manager
                                            ------------------------------------


                                       TENANT:

                                       ENDURATEC SYSTEMS CORP.


                                       By:  /s/ Kent Villander
                                            ------------------------------------

                                       Its: President
                                            ------------------------------------

CONSENT TO SUBLEASE


THE UNDERSIGNED ("LANDLORD") DOES HEREBY CONSENT TO THE FOREGOING SUBLEASE,
PROVIDED THAT SUCH CONSENT SHALL NOT RELEASE OR DISCHARGE THE SUBLESSOR FROM ANY
OF ITS OBLIGATIONS TO BE PERFORMED UNDER THE PRIME LEASE, AND FURTHER PROVIDED
THAT SUCH CONSENT IS LIMITED TO THE FOREGOING SUBLEASE ONLY, AND ANY FURTHER
ASSIGNMENT, SUBLEASE, AMENDMENT OR MODIFICATION OF THIS SUBLEASE OR THE PRIME
LEASE SHALL REQUIRE THE PRIOR WRITTEN CONSENT OF THE UNDERSIGNED PURSUANT TO OF
THE PRIME LEASE.

                                       LANDLORD:

                                       LIBERTY PROPERTY LIMITED PARTNERSHIP

                                       By:  /s/ Douglas Johnson
                                            ------------------------------------

                                       Its: Vice President
                                            ------------------------------------


                                 Page 29 of 86



                                                                    EXHIBIT 10.2


THIS AGREEMENT is made the         day of                         1998
BETWEEN:


(1)      DOUGLAS EQUIPMENT LIMITED a company registered in England and Wales
         (Company No: 697744) whose registered office is at Village Road, Arle,
         Cheltenham, Gloucester GL51 0AB (trading as Douglas Schopf) ("the
         Purchaser"); and

(2)      BISON INSTRUMENTS INC a company registered in the State of Minnesota
         (Federal Identification No: 41-0947661) whose principal place of
         business is at 5610 Rowland Road, Minneapolis, MN 55343-8956 ("the
         Vendor").

WHEREAS:

The Vendor wishes to sell the Assets (as defined below) and the Purchaser wishes
to purchase the Assets upon the terms and subject to the conditions hereinafter
appearing.

NOW IT IS HEREBY AGREED as follows:-

1.       INTERPRETATION

         1.1.     In this Agreement the following words and expressions shall
                  have the following meanings, unless they are inconsistent with
                  the context:

                  "THE ASSETS" means the Intellectual Property Rights, the
                  Stock, the four (4) completed Ultra Chassis Friction Meters,
                  the Designs, the Software and the Records and any other
                  property, rights and assets relating to the Business as set
                  out in Schedule 1;


                                 Page 30 of 86
<PAGE>


                  "A BUSINESS DAY" means Mondays to Fridays (inclusive) except
                  any day which is a public holiday in England or the United
                  States of America;

                  "THE BUSINESS" means the Vendor's business associated with the
                  sale of the Vendor's friction measurement product line as
                  carried on by the Vendor prior to Completion;

                  "COMPLETION" means the actual completion of the sale of the
                  Assets to the Purchaser;

                  "THE COMPLETION DATE" means 2 November 1998 or three Business
                  Days after the Vendor has obtained Shareholder approval in
                  accordance with clause 8.1 hereof whichever is the later;

                  "THE CONTRACTS" means all those contracts and licences of any
                  nature entered into by the Vendor with agents or distributors
                  under which such agents or distributors sell, sub-license or
                  distribute the Software or any friction measurement equipment;

                  "THE DESIGNS" means the mechanical and electronic design of
                  the MK4 and MK5 equipment, the mechanical and electrical
                  design of the Bison Self Watering System (ie speed related
                  system part number B707 and Dual Speed system part number
                  B706) and the mechanical design of the Ultra Chassis Friction
                  Meters;

                  "THE ESCROW AMOUNT" means the sum of $US 50,000 payable by the
                  Purchaser to the Purchaser's Solicitors in accordance with
                  clause 3.2 and to be dealt with in accordance with clause 3.3;


                                 Page 31 of 86
<PAGE>


                  "GROUP" means a group as defined in section 53(1) of the
                  Companies Act 1989;

                  "THE INTELLECTUAL PROPERTY RIGHTS" means the Trade Mark and
                  all and any patents, patent applications, copyrights, trade
                  marks, service marks, registered designs, design rights,
                  business names, know-how, database rights and any other
                  industrial or intellectual property rights (and applications
                  for any of these) and any similar or analogous rights in any
                  jurisdiction anywhere in the world subsisting in any of the
                  Records, the Software or the Designs with the exception of
                  those intellectual property rights possessed by the Purchaser
                  or any Company in its Group prior to the date hereof and with
                  the exception of those intellectual property rights set out in
                  clause 2.5 of this Agreement;

                  "THE PURCHASER'S SOLICITORS" means Manches & Co of 3 Worcester
                  Street, Oxford OX1 2PZ;

                  "THE RECORDS" means all and any drawings, papers, documents,
                  samples, reports, specifications, designs, manuals, drawings,
                  statistics, accounts, documentation, know-how, marketing or
                  promotional material and any other material including any
                  drafts, scraps or work in progress or any other information
                  relating to the Stock, the Designs, the Software or the
                  Business, including without limitation:

                  (i) records of all customers to whom sales have been made;

                  (ii) contact names and addresses of the Vendor's agents and
                  distributors in the United States, Canada, Central America and
                  South


                                 Page 32 of 86
<PAGE>


                  America and the rest of the world; and

                  (iii) full details of all suppliers of any and all components
                  of any equipment to which any of the Designs relate;

                  "THE SOFTWARE" means the source code and the object code of
                  the Mu-Meter software and all versions and releases thereof
                  (including without limitation the MK4 and MK5 versions) and
                  all specifications and documentation relating to that
                  software;

                  "THE STOCK" means the stock of the Business including all the
                  test equipment as determined under clause 2.1 below;

                  "THE TRADE MARK" means the trade mark registered in the United
                  States details of which are set out in Schedule 3 including
                  all common law rights connected therewith together with all
                  goodwill relating to that trade mark.

         1.2.     Reference to any statute, statutory provision or statutory
                  instrument shall be construed as including a reference to that
                  statute, statutory provision or statutory instrument (together
                  with all rules and regulations made under them) as may from
                  time to time be amended, consolidated or re-enacted.

         1.3.     References to persons shall include bodies corporate,
                  unincorporated associations and partnerships.

         1.4.     References to clauses and Schedules are to clauses of and
                  Schedules of this Agreement.


                                 Page 33 of 86
<PAGE>


2.       SALE AND PURCHASE

         2.1.     The Vendor shall, on the Completion Date, sell and the
                  Purchaser shall purchase such of the Stock as the Purchaser
                  requires and notifies in writing to the Vendor prior to the
                  Completion Date at the actual cost that the Vendor purchased
                  that Stock from third parties and the four completed Ultra
                  Chassis Friction Meters for US $16,000 each.

                  2.1.1.   The Vendor will forthwith make available to the
                           Purchaser and its authorised representatives the
                           Stock and the four (4) completed Ultra Chassis
                           Friction Meters, for review and inspection purposes
                           in order to allow the Purchaser to determine that
                           such Stock and the four (4) completed Ultra Chassis
                           Friction Meters are of merchantable quality and
                           reasonably fit for their usual purposes. The
                           Purchaser shall notify the Vendor by the Completion
                           Date of any obvious defects which render such
                           defective stock or any of the four (4) completed
                           Ultra Chassis Friction Meters not of merchantable
                           quality or reasonably fit for their usual purposes,
                           as soon as reasonably possible and shall have the
                           right to return such defective Stock and any of the
                           four (4) Ultra Chassis Friction Meters, provided such
                           notice is received by the Completion Date. In such
                           event, the Purchaser will not be obliged to purchase
                           such defective Stock or the defective Ultra Chassis
                           Friction Meters on Completion.

                  2.1.2.   Subject to the Purchaser's rights under clause 2.1.1,
                           the Purchaser acknowledges that the Stock and the
                           four (4) completed Ultra Chassis Friction meters are
                           purchased on an


                                 Page 34 of 86
<PAGE>


                           "as is, where is" basis, and without warranty,
                           express or implied.

         2.2.     Subject to the terms and conditions of this Agreement, on the
                  Completion Date the Vendor will sell and the Purchaser will
                  purchase the Assets.

         2.3.     Subject to the terms and conditions contained in this
                  Agreement the Assets are sold by the Vendor with full title
                  guarantee without any liens, charges, claims, encumbrances or
                  adverse claims.

         2.4.     The Vendor shall on the Completion Date:

                  2.4.1.   transfer title to all the Assets to the Purchaser;
                           and

                  2.4.2.   arrange for the shipment of all the Assets to the
                           Purchaser at the Purchaser's expense and all such
                           items shall be at the risk of the Purchaser from the
                           Completion Date; and

                  2.4.3.   deliver to the Purchaser all documents of title
                           relating to the Assets including without limitation
                           assignments or the Trade Mark and other Intellectual
                           Property Rights in the form set out in Schedule 4 and
                           transfers or assignments of any other of the Assets
                           which are not transferable by delivery; and

                  2.4.4.   deliver to the Purchaser deeds in the form set out in
                           Schedule 2 from respectively, the Vendor, Androcan
                           Inc, and Autrex Inc.

         2.5.     The Vendor retains the right, title and interest in (i) the
                  name "Bison Instruments Inc", (ii) the Bison trade mark,
                  service mark and trade


                                 Page 35 of 86
<PAGE>


                  name (the "Bison Word Mark") and (iii) the Bison graphic logo
                  (the "Bison Logo") (together the "Retained Intellectual
                  Property"). The Purchaser shall have no rights in or to the
                  Bison Logo, including, without limitation, the right to use
                  the Bison Logo. All rights in the Bison Word Mark are reserved
                  to the Vendor. The Purchaser acknowledges that the Bison Word
                  Mark is the property of the Vendor. The Purchaser shall not,
                  during the term of this Agreement or thereafter, adopt or use
                  any service mark, trade name, or trade mark confusingly
                  similar to the Bison Word Mark. The Purchaser acknowledges
                  that strict observance and performance of the terms of this
                  section of the Agreement are necessary to protect the Vendor
                  and the Bison Word Mark.

3.       PAYMENT

         3.1.     In consideration of the Vendor carrying out its obligations
                  under this Agreement and subject to the Vendor complying with
                  clause 2.4 above, the Purchaser shall pay the Vendor the sums
                  set out in Schedule 1 within 24 hours after the Completion
                  Date via an electronic bank transfer to the Purchaser's
                  account number 6046486 with Richfield Bank and Trust, 6625
                  Lyndale Avenue South, Richfield, Minnesota 55423 USA, Main
                  Routing 091016498 less the Escrow amount.

         3.2.     The Purchaser shall pay the Escrow Amount to the Purchaser's
                  Solicitors on 2 November 1998.

         3.3.     The parties irrevocably instruct Manches & Co that in the
                  event that the Vendor shall notify the Purchaser's Solicitors
                  that the Vendor has received shareholders consent as required
                  under clause 8.1 of this Agreement, the Purchaser's Solicitors
                  shall if such notice is received


                                 Page 36 of 86
<PAGE>


                  more than two Business Days prior to 2 November 1998 pay the
                  Escrow Amount to the Vendor on 2 November 1998 or if such
                  notice is received on the date two Business Days prior to 2
                  November 1998 or any date thereafter pay the Escrow Amount to
                  the Vendor on the Completion Date. The Purchaser's Solicitors
                  shall pay the Escrow Amount to the Vendor by electronic
                  transfer to the account specified in clause 3.1.

         3.4.     The Vendor may only instruct the Purchaser's Solicitors under
                  clause 3.3 above if it has obtained its shareholders' consent
                  in accordance with clause 8.1.

         3.5.     All sums stated herein are inclusive of any value added, sales
                  or export taxes (if any) in the United States but is exclusive
                  of any value added, sales or import taxes in the United
                  Kingdom.

         3.6.     The Purchaser will pay the Vendor, within 30 days after any
                  sale to any third party of any of the four completed Ultra
                  Chassis Friction Meters included in the Assets, half of the
                  difference between the price at which it sells any Ultra
                  Chassis Friction Meter included in the Assets to that third
                  party and the price it has paid the Vendor for any Ultra
                  Chassis Friction Meter included in the Assets (as set out in
                  Schedule 1) provided that:

                  3.6.1.   the sale of any Ultra Chassis Friction Meter to the
                           third party occurs within 3 years after the date of
                           this Agreement; and

                  3.6.2.   the third party purchasing any Ultra Chassis Friction
                           Meter pays the Purchaser more than the price that the
                           Purchaser has paid the Vendor for that Ultra Chassis
                           Friction Meter.


                                 Page 37 of 86
<PAGE>


         3.7.     Subject to clause 3.8, the Purchaser agrees that it shall act
                  in good faith regarding the sale of the Ultra Chassis Friction
                  Meters to third parties and, in particular, that:

                  3.7.1.   the Purchaser acting reasonably will attempt to sell
                           the Ultra Chassis Friction Meters purchased under
                           this Agreement before any other Ultra Chassis
                           Friction Meters that the Purchaser acquires later
                           than those acquired under this Agreement; and

                  3.7.2.   the price at which the Purchaser sells any of the
                           Ultra Chassis Friction Meters to a third party will
                           not be unfairly discounted by the Purchaser by
                           comparison with the discounts offered by the
                           Purchaser on other meters; and

                  3.7.3.   following the reasonable request of the Vendor, the
                           Purchaser will inform the Vendor how many of the
                           Ultra Chassis Friction Meters purchased from the
                           Vendor under this Agreement have been sold.

         3.8.     The obligations of the Purchaser in clause 3.7 shall not
                  prevent the Purchaser from selling any other type of friction
                  meter to any third party before the Ultra Chassis Friction
                  Meters purchased under this Agreement, and shall not prevent
                  the Purchaser from selling any of the Ultra Chassis Friction
                  Meters at such price as it deems to be appropriate acting
                  reasonably.


                                 Page 38 of 86
<PAGE>


4.       OBLIGATIONS OF THE VENDOR

         4.1.     Subject to the Purchaser's review of the source code of the
                  Software to be provided to the Purchaser forthwith, the Vendor
                  shall procure that the services of Karina Rasyaeva, Hugo Janke
                  or John Decharinte are made available to the Purchaser for 30
                  hours (10 hours a day on 3 consecutive days) and that the
                  services of Karina Rasyaeva or Hugo Janke are made available
                  to the Purchaser for 18 hours of the total 30 hour period (6
                  hours a day on 3 consecutive days), at a time to be arranged
                  between the parties , in order to transfer to a representative
                  of the Purchaser the Vendor's information and knowledge
                  relating to the Software and the structure and operation of
                  the source code for the Software.

         4.2.     In the event that the Purchaser considers that the transfer of
                  information set out in clause 4.1 from Karina Rasyaeva or Hugo
                  Janke has not been achieved within 30 hours, the Vendor shall
                  make the Services of Karina Rasyaeva or Hugo Janke available
                  to the Purchaser for a further 18 hours (6 hours a day on 3
                  consecutive days ) at a time to be arranged between the
                  parties for the purpose as set out in clause 4.1 above.

         4.3.     The Vendor shall provide such information as the Purchaser may
                  require to enable the Purchaser to carry out effective after
                  sales support to the Purchaser's customers including, without
                  limitation, full details of the type and mark of any friction
                  measurement product supplied to individual customers of the
                  Vendor, the agent (if any) that was involved in that supply
                  and the contact names, addresses and company names of any such
                  customers.


                                 Page 39 of 86
<PAGE>


5.       LIABILITIES, CONTRACTS AND CLAIMS

         For the avoidance of doubt, the Purchaser shall not be liable to pay,
         satisfy or discharge any liabilities (whether accrued, actual or
         contingent) of the Vendor in connection with the Business or any of the
         Assets arising from any act or omission or event occurring prior to
         Completion.

6.       WARRANTIES

         6.1.     The Vendor represents and warrants that:

                  6.1.1.   it has terminated all of the Contracts prior to the
                           date hereof and no third party shall have any rights
                           to sell, distribute or sub-license the Software or
                           any of the Assets, or to use the Trade Mark or any
                           similar mark in connection with any goods or services
                           within the class[es] in which the Trade Mark is
                           registered or used or use any of the other
                           Intellectual Property Rights in any way whatsoever;

                  6.1.2.   it will not, and will procure that each company in
                           its Group will not, hereafter use or permit the use
                           of any of the Intellectual Property Rights (or any
                           part thereof) without a licence from the Purchaser;

                  6.1.3.   it will promptly provide on request all reasonable
                           assistance and technical information to the Purchaser
                           (including allowing reasonable site visits before
                           Completion) for the purpose of enabling the Purchaser
                           to grant licences of or assign the Intellectual
                           Property Rights (or any part thereof) to any third
                           party but the Vendor will only be obliged to provide
                           assistance


                                 Page 40 of 86
<PAGE>


                           where the Vendor is able to do so;

                  6.1.4.   it has caused to be waived irrevocably all moral
                           rights which may exist in relation to any of the
                           Assets anywhere in the world;

                  6.1.5.   the Vendor is the sole and legal owner of the
                           Intellectual Property Rights, has full power to enter
                           into this Agreement and has not previously assigned
                           or licensed any of the Intellectual Property Rights
                           or otherwise encumbered any of the Intellectual
                           Property Rights;

                  6.1.6.   to the best of the Vendor's knowledge the Assets (or
                           part thereof) or the possession or use of the Assets
                           (or part thereof) by the Purchaser, will not infringe
                           any intellectual property right or any other right of
                           any third party in any way whatsoever, provided that
                           no warranty is given under this clause 6.1.6 in
                           respect of any part of the Software developed by the
                           Purchaser;

                  6.1.7.   the Software is and will be Year 2000 compliant. For
                           the purposes of this clause, "Year 2000 compliant"
                           means neither the performance, operation or
                           functionality of the Software is or will be affected
                           by any dates prior to, during or after 1 January 2000
                           and in particular:

                           (i)      no value for current date causes or will
                                    cause any interruption in the operation,
                                    performance or functionality of the
                                    Software;


                                 Page 41 of 86
<PAGE>


                           (ii)     date based functionality in the Software
                                    does and will behave consistently for dates
                                    prior to, during and after the Year 2000;

                           (iii)    in all interfaces to and data storage in the
                                    Software, the century in any date is and
                                    will be specified either explicitly or by
                                    unambiguous algorithms or inferencing rules;

                           (iv)     the year 2000 is and will be recognised by
                                    the Software as a leap year;

                  6.1.8.   it is the registered proprietor of the Trade Mark and
                           nothing has been done or omitted to be done which
                           entitles any person to cancel or rectify or otherwise
                           modify any registration of the Trade Mark;

                  6.1.9.   no claim concerning any infringement of any of the
                           Intellectual Property Rights has been made against or
                           by the Vendor, the Vendor has not considered making
                           any such claim and, to the best of the Vendor's
                           knowledge and belief, there has been no infringement
                           of any of the Intellectual Property Rights; and

                  6.1.10.  the Vendor uses no assets other than the Assets in
                           relation to the Business and no marks or names
                           (registered or otherwise) have been used by the
                           Vendor in relation to the Assets or the Business
                           other than those names, logos or marks included in
                           the Vendor's Retained Intellectual Property.

         6.2.     The Vendor will indemnify and keep the Vendor indemnified
                  against


                                 Page 42 of 86
<PAGE>


                  all and any costs, expenses, liabilities, damages, losses and
                  claims incurred or suffered by the Purchaser which are
                  notified to the Vendor during the 3 years following Completion
                  as a result of or arising from any breach of the above
                  warranties by the Vendor.

7.       FURTHER ASSURANCE

         7.1.     The Vendor will, at the reasonable request of the Purchaser
                  and at the Purchaser's expense for out of pocket costs:

                  7.1.1.   do all acts, and execute and swear all documents that
                           are reasonably necessary to vest absolute legal and
                           beneficial ownership of the Intellectual Property
                           Rights in the Purchaser or to perfect the Purchaser's
                           title thereto anywhere in the world; and

                  7.1.2.   give to the Purchaser such reasonable assistance as
                           the Purchaser may request in evidencing the
                           Purchaser's title to and enforcing and defending the
                           Intellectual Property Rights anywhere in the world.

         7.2.     The Vendor hereby appoints the Purchaser as its attorney on
                  behalf of the Vendor to complete and execute such documents
                  and do such things as the Purchaser may reasonably require to
                  perfect the assignment and transfer of the Intellectual
                  Property Rights to the Purchaser pursuant to clause 2 and the
                  Vendor hereby agrees to ratify and confirm such acts of the
                  Vendor and declares this power to be irrevocable pursuant to
                  section 4 of the Powers of Attorney Act 1971.


                                 Page 43 of 86
<PAGE>


                  The Purchaser shall not exercise the power of attorney hereby
                  granted if

                  7.2.1.   the Vendor advises the Purchaser that it disagrees
                           with the assignment or transfer within 14 days after
                           the Purchaser's request; and

                  7.2.2.   unless the Vendor shall have failed to execute and
                           deliver such documents or do such things within 14
                           days after the Purchaser's request to do so.

                  In the event that the Purchaser disagrees with the Vendor then
                  the provisions of clause 13 shall apply.

         7.3.     The Vendor may keep one copy of any of the Records that it is
                  required to keep by law for accounting, legal or tax purposes
                  and that copy may only be used for such purposes.

         7.4.     The Vendor will remain liable to any third party under any
                  warranties it has given to that third party in relation to the
                  Business or any of the Assets and will indemnify and keep
                  indemnified the Purchaser against all and any costs, expenses,
                  liabilities, damages, losses and claims incurred by the
                  Purchaser as a result of or arising from any breach of the
                  warranties referred to in this clause.

         7.5.     Subject to clause 7.4, for a period of 12 months after
                  Completion the Purchaser will use reasonable endeavours to
                  fulfil any warranty obligations of the Vendor in relation to
                  the Software or any Ultra Chassis Friction Meters provided
                  that the Vendor shall pay and reimburse the Purchaser at the
                  Purchaser's then standard time and


                                 Page 44 of 86
<PAGE>


                  material rates for any work carried out under this clause and
                  will reimburse to the Purchaser all other reasonable direct
                  expenses incurred in connection with that work, and provided
                  that the Purchaser shall have no liability to any third party
                  or to the Vendor for any failure to fulfil such warranty
                  obligations.

         7.6.     The Vendor shall use its reasonable endeavours after the
                  Completion Date to pass onto the Purchaser any enquiries
                  relating to the Business, the Assets or any sales of any
                  friction measurement product that it receives from third
                  parties.

8.       CONDITIONS

         8.1.     The completion of the transfer and assignment of the Assets to
                  the Purchaser is conditional upon the passing at a duly
                  convened and held special meeting of the Vendor's shareholders
                  of a resolution to approve the sale of the Assets. The Vendor
                  shall procure that all necessary steps are taken so that that
                  meeting is held on or before the date 30 days from 2 November
                  1998. The Vendor shall notify the Purchaser and the
                  Purchaser's Solicitors that it has obtained its shareholders'
                  consent in accordance with this clause within one Business Day
                  of obtaining that consent.

         8.2.     In the event of such resolution not being passed on or before
                  the date 60 days from 2 November 1998 , this Agreement shall
                  terminate and neither party shall be liable to the other in
                  respect of such termination, provided that termination shall
                  not affect either party's accrued rights at termination.


                                 Page 45 of 86
<PAGE>


         8.3.     The Vendor undertakes that with effect from the date hereof
                  until Completion or the termination of this Agreement under
                  clause 8.2, it will act in concert with the Purchaser in all
                  matters relating to the Business and the Assets and in
                  particular it will:

                  8.3.1.   pass all live enquiries relating to the Business or
                           the Assets to the Purchaser as soon as reasonably
                           practical;

                  8.3.2.   obtain the prior written approval of the Purchaser
                           before any quotation is made to any potential
                           customer or purchaser of any of the Assets or any
                           friction measurement product; and

                  8.3.3.   will send the Purchaser a copy of all correspondence
                           which it intends to send to its customers or to its
                           potential customers for review by the Purchaser and
                           will alter such correspondence as the Purchaser
                           reasonably requires.

                  Any sales of any product (including any of the Assets) to any
                  third party shall enure for the benefit of the Purchaser
                  provided that this transaction is completed.

9.       INSURANCE

For a period of three years after the date of this Agreement, the Purchaser
shall maintain products liability insurance covering the sale of the Assets to
third parties in a minimum amount of 5 million US dollars.

10.      LITIGATION

Each party shall immediately notify the other affected party of any claim of
which it


                                 Page 46 of 86
<PAGE>


becomes aware and for which it is entitled to indemnification from the other
party under this Agreement. The indemnifying party shall be obliged to defend at
the indemnifying party's sole expense any litigation or other administrative or
adversarial proceeding against the indemnified party relating to any claim for
which the indemnifying party has agreed to indemnify and hold the indemnified
party harmless under this Agreement. However, the indemnified party shall have
the right to participate with the indemnifying party in the defence of any such
claim at its own expense.

11.      NOTICES

         11.1.    Any demand, notice or communication shall be deemed to have
                  been duly served:-

                  11.1.1.  if delivered by hand, when left at the address for
                           service provided for in this clause 11;

                  11.1.2.  if sent by prepaid first class post, 96 hours after
                           being posted (excluding Saturdays, Sundays and other
                           days which are not business days); or

                  11.1.3.  if sent by facsimile, on the next business day after
                           transmission

                  provided that where, in the case of delivery by hand such
                  delivery or transmission occurs on a day which is not a
                  Business Day or after 4.00 p.m. on a Business Day, service
                  will be deemed to occur on the next following Business Day.

         11.2.    Any demand, notice or communication must be made in writing
                  addressed to the addresses set out below, or sent to the
                  following fax


                                 Page 47 of 86
<PAGE>


                  numbers:

                  the Vendor:       Bison Instruments Inc, 5610 Rowland Road,
                                    Minneapolis, Minnesota MN 55343-8956
                                    (Facsimile Number: 001 612 931 0997) with a
                                    copy to Androcan Inc, 50 Bartor Road,
                                    Toronto, Canada M9M 2G5 (Facsimile Number:
                                    001 416 745 9884)

                  the Purchaser:    Douglas Equipment Limited, Village Road,
                                    Arle, Cheltenham, Gloucestershire GL51 0AB
                                    (Facsimile Number: 01242 221198)

12.      GENERAL

         12.1.    Neither party may assign this Agreement in whole or in part
                  without first obtaining the written consent of the other but,
                  subject thereto, this Agreement shall be binding on and shall
                  enure for the benefit of each party's permitted successors and
                  assigns, as the case may be.

         12.2.    Except for any obligation fully performed at or prior to
                  Completion, each of the agreements, covenants, obligations,
                  warranties, indemnities and undertakings contained in this
                  Agreement shall continue in full force and effect
                  notwithstanding Completion but in any event the Vendor's
                  liability for any of the agreements, covenants, obligations,
                  warranties, indemnities, or undertakings under this Agreement
                  shall not survive beyond three years following the Completion
                  Date, and provided that the maximum liability of the Vendor
                  under this Agreement is limited to the sums paid to the Vendor
                  by the Purchaser under this Agreement.


                                 Page 48 of 86
<PAGE>


         12.3.    Failure or delay by either party in exercising any right or
                  remedy of that party under this Agreement shall not in any
                  circumstances operate as a waiver of it, nor shall any single
                  or partial exercise of any right or remedy in any
                  circumstances preclude any other or further exercise of it or
                  the exercise of any other right or remedy. Any waiver of a
                  breach of, or default under, any of the terms of this
                  Agreement shall not be deemed a waiver of any subsequent
                  breach or default and shall in no way affect the other terms
                  of this Agreement.

         12.4.    The headings to the clauses of this Agreement shall not affect
                  its construction.

         12.5.    This Agreement shall be subject to the laws of England and
                  Wales and subject to clause 13 each party shall submit to the
                  exclusive jurisdiction of the English Courts.

13.      DISPUTE RESOLUTION

         13.1.    If any dispute arises between the parties arising from or
                  relating to this Agreement, the Vendor or the Purchaser shall
                  refer the dispute to their respective representatives, who
                  shall promptly discuss the dispute with a view to its
                  resolution.

         13.2.    If any dispute cannot be resolved in accordance with Clause
                  13.1 within 14 days, the Purchaser or the Vendor may require
                  in writing that the matter be referred for consultation
                  between the Board of the Purchaser and the Board of the
                  Vendor. In this event, both the Purchaser and the Vendor shall
                  be represented by one or more members of their respective
                  Boards in consultations which shall be held within twenty-one
                  days of the requirement.


                                 Page 49 of 86
<PAGE>


         13.3.    If any dispute can not be resolved under clauses 13.1 and
                  13.2, the dispute may be referred by either party to a person
                  agreed by the parties or in default of agreement within 10
                  Business Days to a person nominated by the President of the
                  Law Society in the United Kingdom with a request that such a
                  person make a decision on the dispute within 10 Business Days
                  of receiving the reference. The nominated person shall act as
                  an expert and not as an arbitrator and the decision of the
                  expert in the absence of manifest fraud or error, shall be
                  final and binding. Each party shall share the costs of
                  instructing the expert.

AS WITNESS the hands of the duly authorised representatives of the parties the
day and year first above written.


                                 Page 50 of 86
<PAGE>


                                   SCHEDULE 1

- - --------------------------------------------------------------------------------
     ASSETS                                                     PURCHASE PRICE
                                                                $US
- - --------------------------------------------------------------------------------
1.   The Stock                                                  As determined
                                                                under clause 2.1
- - --------------------------------------------------------------------------------
2.   Four complete and tested Ultra Chassis Friction Meters     US$16,000 each
- - --------------------------------------------------------------------------------
3.   The Software, the Records and the Intellectual Property    US$100,000
     Rights
- - --------------------------------------------------------------------------------


                                 Page 51 of 86
<PAGE>


                                   SCHEDULE 2

THIS DEED OF COVENANT is made the           day of                      1998
BETWEEN:

(1)      DOUGLAS EQUIPMENT LIMITED a company registered in England and Wales
         (Company No: 697744) whose registered office is at Village Road, Arle,
         Cheltenham, Gloucester GL51 0AB (trading as Douglas Schopf) ("the
         Purchaser"); and

(2)      [                   ] a company registered [                         ]
         (Company No: [              ]) whose principal place of business is at
         [                   ] ("the Covenantor").


WHEREAS

The Purchaser has agreed to enter into an agreement with Bison Instruments Inc
("the Company") under which the Company will sell certain assets to the
Purchaser for the sums set out therein ("the Agreement") and, in consideration
of the Purchaser entering into the Agreement, the Covenantor has agreed to give
the Purchaser the covenant set out below.

IT IS AGREED THAT:

1.       INTERPRETATION

         1.1      Words and expressions defined in the Agreement shall have the
                  same meaning in this Deed.


                                 Page 52 of 86
<PAGE>


         1.2      In addition, "the Restriction Period" shall mean the period of
                  [five] years following the date hereof.

2.       COVENANT

         The Covenantor covenants with the Purchaser that it will not, and will
         procure that any body corporate of which it has from time to time
         control (within the meaning of Section 840 of the Income and
         Corporation Taxes Act 1988) and that and any partnership or any
         business in which it may be engaged or interested will not:

         2.1      at any time during the Restriction Period, either by itself or
                  with or on behalf of any other person, firm or company,
                  directly or indirectly engage or participate in, or carry on
                  the business of, friction measurement anywhere in the United
                  States which is similar to or in competition with the Business
                  or the business carried on from time to time by the Purchaser
                  in relation to any of the Assets;

         2.2      at any time during the Restriction Period, either by itself or
                  with or on behalf of any other person, firm or company,
                  directly or indirectly engage or participate in, or carry on
                  the business of friction measurement anywhere in the world
                  (other than the United States) which is similar to or in
                  competition with the Business or the business carried on from
                  time to time by the Purchaser in relation to the Assets;

         2.3      at any time during the Restriction Period, either by itself or
                  with or on behalf of any other person, firm or company,
                  directly or indirectly solicit or entice, or endeavour to
                  solicit or entice, away from the Purchaser or (in relation to
                  any business which may in any way be in competition with any
                  of the businesses carried on from time to time by


                                 Page 53 of 86
<PAGE>


                  the Purchaser) deal with any person, firm or company which at
                  the date hereof, or at any time during the period of two years
                  prior to the date hereof, has directly or indirectly been a
                  customer, agent or supplier or otherwise in the habit of
                  dealing with the Company or the Purchaser in connection with
                  the friction measurement business;

         2.4      at any time subsequent to Completion represent itself as
                  currently being in any way connected with or interested in any
                  friction management business. For the avoidance of doubt, the
                  Covenantor may represent itself as being connected with the
                  friction management business which was carried on by the
                  Vendor prior to Completion;

         2.5      at any time disclose or use any confidential information
                  relating to the Business or to the Company's affairs or trade
                  secrets.

3.       The covenants contained in Clause 2 hereof shall be separate and (if
         necessary) severable covenants.

4.       The restrictions contained in Clause 2 are considered reasonable by the
         parties but in the event that any such restrictions shall be found to
         be void, but would be valid if some part thereof were deleted or the
         period or area of application reduced, such restriction shall apply
         with such modification as may be necessary to make it valid and
         effective.

5.       It is hereby agreed and declared that the benefit of this Deed shall be
         assignable by the Purchaser to any purchaser of its shares or any
         assignee of its friction measurement business.

6.       This Deed shall be subject to the laws of England and Wales and each
         party shall submit to the exclusive jurisdiction of the English Courts.


                                 Page 54 of 86
<PAGE>


IN WITNESS whereof this Deed has been executed by the parties hereto and is
intended to be and is hereby delivered the day and year first before written.


EXECUTED as a DEED              )
by Douglas Equipment            )
Limited                         )

                                ....................................... Director

                                ............................. Director/Secretary


EXECUTED as a DEED              )
by the Covenantor               )
                                ....................................... Director

                                ............................. Director/Secretary


                                 Page 55 of 86
<PAGE>


                                   SCHEDULE 3


                              DETAILS OF TRADE MARK

         ------------------------------------------------------------
              Trade Mark          Date of            Registration
                                Registration            Number
         ------------------------------------------------------------
               MU-METER         3 June 1997           1,066,264
         ------------------------------------------------------------


                                 Page 56 of 86
<PAGE>


                                   SCHEDULE 4


               FORM OF ASSIGNMENT OF INTELLECTUAL PROPERTY RIGHTS


THIS DEED OF ASSIGNMENT is made the               day of                    1998

BETWEEN

(1)      BISON INSTRUMENTS INC a company registered in the State of Minnesota
         (Federal Identification No: 41-0947661) whose principal place of
         business is at 5610 Rowland Road, Minneapolis, MN 55343-8956 ("the
         Vendor");

(2)      DOUGLAS EQUPMENT LIMITED a company registered in England & Wales
         (Company No: 697744) whose registered office is at Village Road, Arle,
         Cheltenham. Gloucester GL51 0AB (trading as Douglas Schopf) ("the
         Purchaser").


WHEREAS

The parties have entered into the Sale and Purchase Agreement (as defined below)
under which the Vendor agreed to assign the Intellectual Property Rights (as
defined below) to the Purchaser on the terms and conditions set out below.

IT IS AGREED

1.       DEFINITION

         In this Assignment the following words shall have the following
         meanings:


                                 Page 57 of 86
<PAGE>


         "THE BUSINESS"    means the Vendor's business associated with the sale
                           of the Vendor's friction measurement product line as
                           carried on by the Vendor prior to the date hereof;

         "THE DESIGNS"     means the mechanical and electronic design of the MK4
                           and MK5 equipment, the mechanical and electrical
                           design of the Bison Self Watering System (ie speed
                           related system part number B707 and Dual Speed system
                           part number B706) and the mechanical design of the
                           Ultra Chassis Friction Meters;

         "THE INTELLECTUAL means the Trade Mark and all and any patents, patent
         PROPERTY RIGHTS"  applications, copyrights, trade marks, service marks,
                           registered designs, design rights, business names,
                           know-how, database rights and any other industrial or
                           intellectual property rights (and applications for
                           any of these) and any similar or analogous rights in
                           any jurisdiction anywhere in the world subsisting in
                           any of the Records, the Software or the Designs with
                           the exception of those intellectual property rights
                           possessed by the Purchaser prior to the date of the
                           Sale and Purchase Agreement and with the exception of
                           the name "Bison Instruments Inc, the Bison trade
                           mark, service mark and trade name (the "Bison Word
                           Mark") and the Bison graphic logo (the "Bison Logo");

         "THE RECORDS"     means all and any drawings, papers, documents,
                           samples, reports, specifications, designs, manuals,
                           drawings, statistics, accounts, documentation,
                           know-how,


                                 Page 58 of 86
<PAGE>


                           marketing or promotional material and any other
                           material including any drafts, scraps or work in
                           progress or any other information relating to the
                           Stock, the Designs, the Software or the Business,
                           including without limitation:

                           (i)      records of all customers to whom sales have
                                    been made;

                           (ii)     contact names and addresses of the Vendor's
                                    agents and distributors in the United
                                    States, Canada, Central America and South
                                    America and the rest of the world; and

                           (iii)    full details of all suppliers of any and all
                                    components of any equipment to which any of
                                    the Designs relate;

         "THE SALE AND     means the agreement dated [             ] between the
         PURCHASE          Vendor and the Purchaser for the sale and purchase of
         AGREEMENT"        the Intellectual Property Rights and other assets;

         "THE SOFTWARE"    means the source code and the object code of the
                           Mu-Meter software and all versions and releases
                           thereof (including without limitation the MK4 and MK5
                           versions) and all specifications and documentation
                           relating to that software;


                                 Page 59 of 86
<PAGE>


         "THE STOCK"       means the stock of the Business including all the
                           test equipment as determined in the Sale and Purchase
                           Agreement;

         "THE TRADE MARK"  means the trade mark registered in the United States
                           details of which are set out in the Appendix hereto
                           and all goodwill attaching to that mark.

2.       ASSIGNMENT

         In consideration of the sum of (pound)1, exclusive of VAT, the receipt
         of which is hereby acknowledged the Vendor hereby assigns with full
         title guarantee the Intellectual Property Rights to the Purchaser
         absolutely.

3.       GOVERNING LAW

         This Assignment is subject to and shall be construed in accordance with
         English law and the parties hereby irrevocably submit to the exclusive
         jurisdiction of the English Courts in relation thereto.


Executed as a Deed by the above parties and is intended to be and is hereby
delivered the day and year appearing above.


EXECUTED as a Deed by           )
BISON INSTRUMENTS Inc           )      .........................................
                                       Director


                                       .........................................
                                       Director/Secretary


                                 Page 60 of 86
<PAGE>


EXECUTED as a Deed              )
by DOUGLAS EQUIPMENT            )
LIMITED                         )      .........................................
                                       Director


                                       .........................................
                                       Director/Secretary


                                 Page 61 of 86
<PAGE>


                                    APPENDIX


                              DETAILS OF TRADE MARK

         ------------------------------------------------------------
              Trade Mark          Date of            Registration
                                Registration            Number
         ------------------------------------------------------------
               MU-METER         3 June 1997           1,066,264
         ------------------------------------------------------------


                                 Page 62 of 86
<PAGE>


SIGNED by                       )
for and on behalf of            ) David Toolan
DOUGLAS EQUIPMENT               )
LIMITED                         )




SIGNED by                       )
for and on behalf of            ) Edward G. Lampman
BISON INSTRUMENTS INC           )


                                 Page 63 of 86
<PAGE>


                             DATED ____________ 1998



                          DOUGLAS EQUIPMENT LIMITED (1)


                                     - and -


                            BISON INSTRUMENTS INC (2)



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

                     AGREEMENT FOR THE SALE AND PURCHASE OF
                     ASSETS AND INTELLECTUAL PROPERTY RIGHTS

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














                                                                    Manches & Co
                                                              3 Worcester Street
                                                                          OXFORD
                                                                         OX1 2PZ

                                                               Tel: 01865 722106
                                                               Fax: 01865 201012

                                 Page 64 of 86




                                                                    EXHIBIT 10.3


                           PURCHASE AND SALE AGREEMENT

         THIS PURCHASE AND SALE AGREEMENT (the "Agreement") is made and entered
into as of June 5, 1998, by and between INNOVATIVE TRANSDUCERS INC., a Delaware
corporation, with offices at 17200 Park Row, Houston, Texas 77084-3925 ("ITI" or
"Buyer"), and BISON INSTRUMENTS, INC., a Minnesota corporation, with offices at
5610 Rowland Road, Minneapolis, Minnesota 55343-8956 ("Bison" or "Seller").

                                    RECITALS

         Seller desires to sell and Buyer desires to purchase all of Seller's
right, title and interest in and to the Assets defined herein pursuant to the
terms and conditions of this Agreement.

         Therefore, Seller agrees to sell and Buyer agrees to purchase the
Assets on the terms and conditions set forth in this Agreement.

                          ARTICLE 1. PURCHASE AND SALE

1.1      Assets. Subject to the terms of this Agreement, Seller agrees to
         convey, transfer and assign to Buyer, and Buyer agrees to accept, as of
         the Closing Date, all of Seller's right, title and interest in and to
         the Jupiter and Galileo product lines (hereinafter collectively
         referred to as the "Assets"). The Assets including without limitation:

         1.1.1    Inventories. All of Seller's right, title and interest in the
                  inventory of finished goods, work in progress, raw materials,
                  parts, rental equipment and all other materials and supplies
                  associated with the Jupiter and Galileo product lines as
                  listed and valued on Schedule 1.1.1 (the "Inventories");

         1.1.2    Intellectual Property. All of Seller's intellectual property
                  used in developing or operating the Assets, including without
                  limitation proprietary computer software, patents, trade
                  secrets, copyrights, marks, logos, goodwill, and the property
                  licensed to Seller in that certain License Agreement With One
                  Time Fee dated November 1, 1996, between Bison Instruments,
                  Inc. and Hugh Winkler, but excluding those assets identified
                  in Section 1.2.7 of the Agreement (the "Intellectual
                  Property");

         1.1.3    Contracts. All of Seller's right, title and interest in the
                  contracts, agreements and commitments related to the purchase
                  of the Jupiter and Galileo products, as listed on Schedule
                  1.1.3 hereto;

         1.1.4    Records. All of Seller's right, title and interest in all
                  files, records and other data (including but not limited to
                  those in electronic format) in the actual


                                 Page 65 of 86
<PAGE>


                  possession of Seller related to the Inventories and
                  Intellectual Property including without limitation all
                  operational records, technical records, contract files,
                  computer records, computer tapes and disks, supplier lists,
                  marketing document, credit information, operating guides and
                  manuals, sales records, research and development reports and
                  records, and production reports and records, but excluding
                  accounting and tax records and any documents covered by the
                  attorney-client communication or attorney work product
                  privileges (the "Seller Records");

         1.1.5    Names. All rights of any kind whatsoever in the names "Bison
                  Instruments", "Galileo", and "Jupiter". However, Buyer agrees
                  that (a) for a period of one (1) year, Seller may continue to
                  use the name "Bison Instruments" in connection with Seller's
                  sale and servicing of its inventory that exists for
                  seismographic product lines other than the Jupiter and Galileo
                  product lines, and (b) Seller may continue to use the name
                  "Bison Instruments, Inc." in connection with Seller's
                  operation of its Bison Instruments, Inc. company only if such
                  company's operations do not compete in the same market
                  encompassing Buyer's seismographic products;

         1.1.6    Manufacturing Documentation. All of Seller's right, title, and
                  interest in all manufacturing documentation associated with
                  the seismograph product lines listed on Schedule 1.1.6.

1.2      Retained Assets. The Assets to be conveyed to Buyer do not include any
         assets other than those set forth in Section 1.1 and exclude
         specifically, without limitation, the following property:

         1.2.1    Records. Any of Seller's corporate, financial and accounting
                  and tax records, and legal files, except that Seller will
                  provide Buyer with copies of any tax records that are
                  necessary for Buyer's ownership, administration or operation
                  of the Assets.

         1.2.2    Confidential Information. Notwithstanding any other provision
                  of this Agreement to the contrary, any records or data that
                  Seller reasonably considers proprietary or confidential
                  (including without limitation employee information and
                  excepting the documents described in 1.1.6 above), or which
                  Seller cannot provide to Buyer because of third-party
                  restrictions;

         1.2.3    Cash. All of Seller's cash.

         1.2.4    Accounts Receivable. All of Seller's accounts receivable.

         1.2.5    Tax Refunds. Any tax refunds due to Seller.


                                 Page 66 of 86
<PAGE>


         1.2.6    Other Product Lines. The assets associated with product lines
                  of Seller other than the Jupiter and Galileo product lines,
                  other than those assets described in Section 1.1.7 above.

         1.2.7    Retained Intellectual Property. All of Seller's right, title,
                  and interest in the BISON graphic logo identified in Schedule
                  1.2.7 as the "BISON LOGO". Buyer shall have no rights in or to
                  the BISON LOGO, including, without limitation, the right to
                  use the BISON LOGO. Seller grants a non-exclusive, worldwide
                  license to Buyer to use the BISON Word Mark in connection with
                  the Assets and for no other use. All other rights in the BISON
                  Word Mark are reserved to Seller. Buyer acknowledges that the
                  BISON Word Mark is the property of the Seller and that by this
                  Agreement Buyer acquires license rights and not the right,
                  title or interest in or to the BISON Word Mark. Buyer shall
                  not, during the term of this Agreement or thereafter, adopt or
                  use any service mark, trade name, or trademark confusingly
                  similar to the BISON Word Mark. Buyer acknowledges that strict
                  observance and performance of the terms of this section of the
                  Agreement are necessary to protect Seller and the BISON Word
                  Mark. IN that regard, Buyer agrees that the BISON Word Mark
                  shall be used only in connection with the Assets and the
                  quality of the Assets will be the same quality or better than
                  the quality of the Assets as presently manufacturing and
                  distributed by Seller. In all agreements entered into by Buyer
                  in which Buyer's right in the BISON Word Mark are assigned,
                  Buyer shall specify that all such assignments are subject to
                  the terms of this Section 1.2.7 and such assignees shall agree
                  to include such terms in any subsequent assignments. Buyer and
                  any and all subsequent assignees shall notify Seller of such
                  assignments of any rights to the BISON Word Mark.

         1.2.8    Customer Lists. All of Seller's right, title and interest in
                  Seller's customer lists. However, Seller shall provide Buyer
                  with copies of Seller's customer lists used for developing or
                  operating the Assets and Buyer shall have the exclusive right
                  to use such lists only in connection with the marketing and
                  selling of the Assets in the seismographic market.

                      ARTICLE 2. CONSIDERATION AND PAYMENT

2.1      Consideration. At Closing, Buyer will pay Seller Four Hundred
         Seventy-four Thousand Dollars ($474,000) in cash, such amount being
         subject to adjustment as provided in Section 2.2 of this Agreement
         (collectively the "Cash Consideration").

2.2      Adjustments to the Cash Consideration after Closing. Adjustments to the
         Cash Consideration shall be made as between the Seller and the Buyer,
         as follows:

         2.2.1    Settlement Statement. The Cash Consideration payable to Seller
                  at Closing will be subject to the adjustments set forth in
                  Section 2.2.2 and

                                 Page 67 of 86
<PAGE>


                  2.2.3. Within sixty (60) days after Closing, the Buyer will
                  prepare and provide to Seller a settlement statement showing
                  all adjustments to the Cash Consideration paid at Closing
                  pursuant to this Section 2.2. (However, failure of Buyer to
                  complete the settlement statement within sixty (60) days after
                  Closing will not constitute a waiver of any right to an
                  adjustment otherwise due.) Seller will have thirty (30) days
                  after receiving the settlement statement to provide Buyer with
                  any written exceptions to any items in the settlement
                  statement that Seller believes in good faith to be
                  questionable. Any such disputed items will be resolved as
                  provided in Section 2.3.1 All items in the settlement
                  statement to which Seller does not except in writing within
                  the thirty (30) day review period will be deemed correct.

         2.2.2    Upward Adjustments. The Cash Consideration will be increased
                  by any increase in value of the Inventories, such value to be
                  determined in accordance with Section 7.1.

         2.2.3    Downward Adjustments. The Cash Consideration will be decreased
                  by any decrease in value of the Inventories, such value to be
                  determined in accordance with Section 7.1.

         2.2.4    Payment of Undisputed Adjustments. Seller and Buyer, as
                  applicable, will pay each other the undisputed adjustment to
                  the Cash Consideration contained in the settlement statement
                  within ten (10) days after the expiration of Seller's thirty
                  (30) day review period for the settlement statement.

2.3.     Resolution of Disputed Adjustments.

         2.3.1    Resolution of Disputed Adjustments. If Seller and Buyer are
                  unable, within ten (10) days after the expiration of Seller's
                  thirty (30) day review period for the settlement statement, to
                  resolve any disputed items pertaining to the settlement
                  statement, the Seller and the Buyer agree to promptly and
                  jointly retain the independent accounting firm of Price
                  Waterhouse LLP to evaluate the items in dispute as between
                  such parties and render an opinion on their validity, with
                  each such affected party paying one-half of the charges of
                  Price Waterhouse LLP. The determination of Price Waterhouse
                  LLP will be final and binding on the parties. If the
                  independent accounting firm determines that a payment or
                  refund is due, the owing party shall pay the full amount
                  determined by Price Waterhouse LLP to be due within ten (10)
                  days after receiving written notice of Price Waterhouse LLP's
                  opinion.

2.4      Payment Method. Unless the parties otherwise agree in writing, all
         payments under this Agreement will be by wire transfer in immediately
         available funds to an account designated by the party receiving
         payment.


                                 Page 68 of 86
<PAGE>


                           ARTICLE 3. REPRESENTATIONS

3.1      Reciprocal Representations. By their execution of this Agreement,
         Seller and Buyer make the following representations as to themselves as
         an executing party. These representations are deemed to be made as of
         the Closing Date.

         3.1.1    Requisite Authority. Seller is a corporation duly organized
                  and in good standing under the laws of Minnesota, is duly
                  qualified to carry on its business in the State of Minnesota,
                  and has all the requisite power and authority to enter into
                  and perform this Agreement. Buyer is a corporation duly
                  organized and in good standing under the laws of Delaware, is
                  duly qualified to carry on its business in the state of Texas,
                  and has all the requisite power and authority to enter into
                  and perform this Agreement.

         3.1.2    Requisite Approvals. The executing party has taken all
                  necessary or appropriate actions to authorize (i) the
                  execution and delivery of this Agreement and the other
                  transaction documents referenced in this Agreement; (ii) the
                  performance of its obligations under this Agreement and the
                  other transaction documents; and (iii) the consummation of
                  this transaction.

         3.1.3    Validity of Obligation. This Agreement and the other
                  transaction documents referenced in this Agreement (I) have
                  been duly executed and delivered by the executing party; (ii)
                  constitute the legal, valid and binding obligations of the
                  executing party, subject to the effect of bankruptcy,
                  insolvency, reorganization, moratorium, or other similar laws
                  relating to creditors' rights generally and general equitable
                  principles; and (iii) are enforceable against the executing
                  party in accordance with their respective terms, subject to
                  the effect of bankruptcy, insolvency, reorganization,
                  moratorium, or other similar laws relating to credits' rights
                  generally and general equitable principles.

         3.1.4    No Conflicts or Impediments. The consummation of the
                  transaction contemplated by this Agreement (i) does not
                  require the approval, authorization, consent or other action
                  by, or filing with, any governmental authority, administrative
                  agency, court or other party; (ii) will not breach, violate or
                  conflict with any material agreement or instrument to which
                  either the executing party or the Assets being transferred by
                  the executing party is subject, including without limitation
                  covenants imposed on the executing party by any bank or other
                  financial institution, lender or debtholder and other terms,
                  provisions or conditions of the Certificate of Incorporation,
                  By-Laws or applicable shareholder agreement of the party; and
                  (iii) does not violate any judgment, decree, law, rule or
                  regulation of any governmental authority or administrative
                  agency, in the case of each


                                 Page 69 of 86
<PAGE>


                  clause (i), (ii) and (iii), in a manner that would adversely
                  affect the transaction.

         3.1.5    Bankruptcy. There are no bankruptcy, reorganization or
                  receivership proceedings pending, being contemplated by, or to
                  its actual knowledge, threatened against it.

         3.1.6    Broker's Fee. The executing party has not incurred any
                  obligation for brokers, finders or similar fees for which the
                  other executing party or parties would be liable.

3.2      Seller's Representations. By its execution of this Agreement, Seller
         makes the following representations to Buyer as to the Assets. These
         representations are deemed to be made as of the Closing Date.

         3.2.1    Preferential Rights and Consents. There are no prior or
                  preferential rights to purchase, rights of first refusal, or
                  other similar rights vested in any other party to purchase or
                  otherwise acquire the Assets.

         3.2.2    Mortgages and Other Instruments. The transfer of the Assets
                  does not violate any covenants or restrictions imposed on
                  Seller by any bank or other financial institution in
                  connection with a mortgage or other instrument, and will not
                  result in the creation or imposition of a lien on any portion
                  of the Assets.

         3.2.3    Compliance with Law and Agreements. Except as disclosed on
                  Schedule 3.2.3(a), to the best of Seller's knowledge, (i)
                  Seller is in compliance with al applicable laws, rules, and
                  regulations of federal, state and local authorities in
                  connection with Seller's ownership and operation of the
                  Assets; and (ii) Seller is in compliance with all of its
                  obligations under the Contracts and any other agreements
                  relating to or involving the Assets. Seller is not a party to
                  any partnership agreements, joint venture agreements,
                  operating agreements and agreements for the sale of the
                  Assets. Except as disclosed on Schedule 3.2.3(b), Seller is
                  not obligated to sell, lease, market, distribute or service
                  the Assets through or with any Person.

         3.2.4    Litigation and Claims. To the best of Seller's knowledge,
                  there are no material actions, suits or other proceedings
                  pending before any court or governmental agency in which
                  Seller is a party or any other claims that (i) would result in
                  loss of Seller's title to the Assets, (ii) would affect the
                  value of the Assets, or (iii) would subject Buyer to an legal
                  or monetary liability, except for those listed in Schedule
                  3.2.4 to this Agreement.

         3.2.5    FIRPTA. Seller is not a "foreign person" as defined in Section
                  1445 of the Internal Revenue Code of 1986, as amended.


                                 Page 70 of 86
<PAGE>


         3.2.6    Bulk Sales Laws. Seller represents that Seller has no
                  creditors or situations which would require the parties hereto
                  to comply with or which would result in the violation of the
                  requirement of any bulk sales act concerning or relating to
                  the transactions contemplated by this Agreement.

3.3      Buyer's Representations. By execution of this Agreement, Buyer makes
         the following representations:

         3.3.1    Licensing. Buyer acknowledges that Buyer has met all of the
                  requirements under applicable local, state and federal law to
                  accept assignment of the Assets, and is not otherwise
                  prevented from having the Assets transferred to such Buyer,
                  and is properly authorized to operate said Assets.

                 ARTICLE 4. WARRANTIES AND WARRANTY DISCLAIMERS.

4.1      Title to Assets. Seller has good and marketable title to all of the
         Assets. Seller represents that it has taken no steps to register or
         apply for registration with respect to he Intellectual Property.

4.2      Encumbrances. Seller represents and warrants that it owns and is
         assigning, conveying and transferring full legal and beneficial
         ownership of Seller's interest in the Assets, free and clear of all
         assessments, charges, liens, pledges, mortgages, security interests and
         other encumbrances caused by Seller, other than Permitted Liens. For
         purposes of this Agreement, "Permitted Liens" means the following:

         (i)      liens for taxes not due or due but not yet delinquent or which
                  are being contested in good faith by appropriate proceedings;

         (ii)     mechanics', materialmens', repairmen's or other like liens
                  arising in the ordinary course of business;

4.3      Condition and Fitness of Assets. To the best of Seller's knowledge, the
         Inventories are of a quality usable and saleable consistent with past
         practice in the ordinary course of Seller's business. The Inventories
         will not include any obsolete, damaged or defective goods.

4.4      Subrogation of Warranties. To the extent transferable without consent
         of a third party, Seller will give and grant to Buyer, its successors
         and assigns, as to the Assets, full power and right of substitution and
         subrogation in and to all covenants and warranties (including
         warranties of title) by preceding owners, vendors, or others, given or
         made with respect to the Assets or any part thereof prior to the
         Closing Date.


                                 Page 71 of 86
<PAGE>


4.5      Representations and Warranties Exclusive. All representations and
         warranties contained in this Agreement (including without limitation
         those in Article 3 and 4 of this Agreement) are exclusive, and are
         given in lieu of all other representations and warranties, express or
         implied.

                           ARTICLE 5. CASUALTY LOSSES

5.1      Casualty Losses.

         5.1.1    Notice of Casualty Losses. If, prior to the date of shipment
                  of the Assets from Seller's facilities to Buyer's facilities,
                  all or part of the Assets are damaged or destroyed by fire,
                  flood, storm or other casualty ("Casualty Losses"), Seller
                  must promptly notify the Buyer in writing of the nature and
                  extent of the Casualty Loss and Seller's estimate of the cost
                  required to repair or replace that portion of the Assets
                  affected by the Casualty Loss.

         5.1.2    Adjustments to Cash Consideration for Casualty Losses. With
                  respect to each Casualty Loss to the Assets, the Buyer will
                  have the following rights:

                  (i)      If Seller and the Buyer agree on the cost to repair
                           or replace the portion of the Assets affected by the
                           Casualty loss, the Cash Consideration will be
                           adjusted by the agreed cost of the Casualty Loss.

                  (ii)     If Seller and the Buyer are unable to agree on the
                           cost to repair or replace the portion of the Assets
                           affected by the Casualty Loss, then the parties shall
                           submit the issue to arbitration, as provided for in
                           Section 9.10, and upon determination of such cost
                           pursuant to arbitration, the Cash Consideration will
                           be adjusted by the arbitration derived cost of the
                           Casualty Loss.

         5.1.3    Insurance Proceeds and Settlement Payments. If the Seller and
                  Buyer agree to an adjustment in the Cash Consideration, Seller
                  will be entitled to retain (i) all insurance proceeds payable
                  to Seller with respect to such Casualty Loss, and (ii) all
                  sums paid to Seller by third parties by reason of the Casualty
                  Loss.

                 ARTICLE 6. CLOSING AND POST-CLOSING OBLIGATIONS

6.1      Closing. The closing of the sale (the "Closing") shall take place on or
         before 5:00 p.m. CST on June 5, 1998, (the actual date on which Closing
         occurs being the "Closing Date") at the offices of Bison Instruments,
         Inc., 5610 Rowland Road, Minneapolis, Minnesota, unless the parties
         agree in writing to another location.

6.2      Closing Obligations. At Closing, the following events will occur, each
         being a condition precedent to the others and each being deemed to have
         occurred simultaneously with the others.


                                 Page 72 of 86
<PAGE>


         6.2.1    Payment of Cash Consideration. Buyer will pay Seller the Cash
                  Consideration by wire transfer.

         6.2.2    Execution and Delivery of Closing Documents. Seller and Buyer
                  will execute, acknowledge, and deliver the following closing
                  documents:

                  (i)      Seller will execute, acknowledge and deliver to Buyer
                           an Assignment, Assumption and Bill of Sale (in
                           sufficient counterparts for recording) transferring
                           Seller's interest in the Assets to Buyer. The
                           Assignment, Assumption and Bill of Sale will be in
                           the form set forth in Exhibit A.

                  (ii)     Seller will obtain and deliver to Buyer releases of
                           any and all liens affecting the Assets.

                  (iii)    Seller and Buyer will execute and deliver any other
                           documents and instruments necessary to consummate the
                           transaction contemplated by this Agreement.

6.3      Post-Closing Obligations.

         6.3.1    Recording Transfer Documents. Buyer, within thirty (30) days
                  after Closing, will record the Assignment and Bill of Sale and
                  all other instruments that must be recorded to effectuate the
                  transfer of the Assets the Seller is transferring to Buyer.
                  All costs of recording and filing these documents will be
                  responsibility of the Buyer.

         6.3.2    Files and Records. No later than thirty (30) days after
                  Closing, Seller will deliver to Buyer (at a location
                  designated by Buyer) the originals or legible copies of the
                  Seller Records relating to the Assets, the Seller is
                  transferring to Buyer. Thereafter, Seller will forward to the
                  Buyer any other correspondence, documents and other
                  information Seller receives relating to the Assets the Seller
                  is transferring to Buyer. Thereafter, Seller will forward to
                  the Buyer any other correspondence, documents and other
                  information Seller receives relating to the Assets the Seller
                  transfers to Buyer. The freight costs and costs of counting
                  and packing the Seller Records will be borne by Buyer. Seller
                  shall pay the costs of packaging materials and will provide
                  assistance with packing the Seller Records. If Seller retains
                  any original Seller Records, the Buyer will have the right to
                  review those original Seller Records during normal business
                  hours. Seller will maintain its computer systems associated
                  with the Assets for a period up to and including September 30,
                  1998 and will assist Buyer in obtaining any reasonable
                  information from the computer systems needed to operate the
                  Assets. After such period, Seller will give Buyer thirty (30)
                  days' notice of Seller's intention to destroy any Seller
                  Records, whereby Buyer will


                                 Page 73 of 86
<PAGE>


                  have the right to obtain such Seller Records from Seller.
                  After the thirty (30) days' notice period expires, Seller
                  shall have the right to destroy any Seller Records it retains
                  in accordance with its usual and customary records retention
                  policies. Nothing herein shall be deemed to require the Buyer
                  to maintain or refrain from disposing of any books and records
                  transferred pursuant to this Agreement for any period of time
                  after the Closing Date. However, if Buyer desires to dispose
                  of any such books or records, Buyer agrees to give Seller
                  notice of such intention and the opportunity to retain such
                  books and records, at Seller's expense. From and after the
                  Closing Date and upon reasonable written require, Seller and
                  Buyer shall cooperate with each other in providing the other
                  party with copies of books or records needed in connection
                  with customer complaints, lawsuits, investigations, and tax
                  audits and examination. Such books or records shall be
                  provided at the cost and expense of the requesting party.

         6.3.3    Training Cooperation. At no cost to Buyer, Seller agrees to
                  assist in the training of two of Buyer's technicians on
                  assembly of the Assets over a period of five (5) full business
                  days at Seller's facilities. Seller shall have no liability
                  and Buyer shall have no recourse to Seller with respect to any
                  assistance provided to Buyer by Seller as a result of its
                  undertakings pursuant to this section.

         6.3.4    Non-competition. Seller and Buyer acknowledge that as an
                  inducement to Buyer to enter into this Agreement and in
                  partial consideration of the Purchase Price, Buyer has
                  required that Seller agree that for a period of three (3)
                  years after the Closing Date, Seller will not engage directly
                  or indirectly anywhere in the Restricted Market (as defined
                  below) in a business which involves products similar to the
                  Jupiter and Galileo product lines, or solicit customers who
                  have purchased from Seller the Jupiter and Galileo products.
                  However, Seller may sell and service any of its existing
                  inventory not sold to Buyer. "Restricted Market" shall mean
                  all international markets and all areas of the United States.
                  Seller agrees that if this Section 6.3.4 is violated, Buyer
                  shall be entitled to seek injunctive relief in addition to any
                  other legal remedies available to it. Seller and Buyer hereby
                  waive any provision of applicable law that would render any
                  provision of this Section 6.3.4 invalid or unenforceable.

         6.3.5    Subrogation of Rights. From and after the Closing Date, if
                  Buyer becomes liable for or suffers any damage with respect to
                  any matter associated with the Jupiter and Galileo product
                  lines that was covered by insurance maintained by Seller or in
                  which Seller is a named insured at or before the Closing Date,
                  Buyer shall be and is hereby subrogated to any rights of
                  Seller under the insurance coverage. Seller shall promptly
                  remit to Buyer any insurance proceeds received by them on
                  account of any such liability or damage less Seller's cost
                  (including any claim amounts), expenses,


                                 Page 74 of 86
<PAGE>


                  and fees relating thereto. In the event of Seller's liability,
                  such insurance proceeds shall be used by Seller to satisfy
                  that liability.

         6.3.6    Customer and Business Relationships. From and after the
                  Closing Date, Seller will cooperate with Buyer in its efforts
                  to continue and maintain, with customers, suppliers, or other
                  business associates of Seller, the same business relationship
                  with Buyer after the Closing Date as maintained with Seller
                  prior to the Closing Date, with respect to the business to be
                  carried on by Buyer with the Assets. Seller will not take any
                  action designed or intended to have the effect of discouraging
                  any person from continuing or maintaining a business
                  relationship with Buyer after the Closing Date.

         6.3.7    Further Assurances. Seller and Buyer agree to execute and
                  deliver from time to time such further instruments and do such
                  other acts as may be reasonably necessary to effectuate the
                  purposes of this Agreement.

         6.3.8    Products Liability Insurance. For a period of one (1) year
                  following Closing, Buyer shall maintain products liability
                  insurance in adequate and appropriate amounts to cover the
                  Inventories. For such period, if Seller becomes liable for or
                  suffers any damage with respect to any matter that is covered
                  by such insurance, Seller shall be and is hereby subrogated to
                  any rights of Buyer under the insurance coverage. Buyer shall
                  promptly remit to Seller any insurance proceeds received by
                  them on account of any such liability or damage less Buyer's
                  cost (including any claim amounts), expenses, and fees
                  relating thereto. In the event of Buyer's liability, such
                  insurance proceeds shall be used by Buyer to satisfy that
                  liability.

         6.3.9    Letter of Credit. Within ten (10) business days after Closing,
                  Seller shall obtain a standby letter of credit with terms
                  mutually agreeable to Buyer and Seller in favor of Buyer to
                  cover Seller's Retained Obligations, as defined in Section 8.3
                  of the Agreement, with the following terms:

                  $184,000 available up to thirty (30) days after Closing;
                  $100,000 available from thirty (30) days to sixty (60) days
                  after Closing;
                  $75,000 available from sixty (60) days to ninety (90) days
                  after Closing;
                  $0 available after ninety (90) days after Closing.

                  The letter of credit shall be payable up to the amount of the
                  claim by the issuer bank upon presentation by Buyer of a
                  written notice of claim. Seller may request arbitration in
                  accordance with Section 9.10 of the Agreement if it disputes
                  Buyer's claim.

              ARTICLE 7. INVENTORIES, REVENUES, EXPENSES AND TAXES


                                 Page 75 of 86
<PAGE>


7.1      Accounting for Inventories. The Buyer will take a physical count of the
         Inventories within sixty (60) days of the Closing Date and will
         determine the fair value of the Inventories. Seller shall assist Buyer
         in counting the Inventories.

7.2      Expenses. Seller will be responsible for the payment of all operating
         expenses and capital expenditures related to the Assets the Seller
         transfer under this Agreement and attributable to the period prior to
         the Closing Date. Buyer will be responsible for the payment of all
         operating expenses and capital expenditures related to the Assets
         attributable to the period on and after the Closing Date. Any party
         that pays any expenses that are the responsibility of another party
         will be reimbursed for those expenses.

7.3      Taxes and Incidental Expenses

         7.3.1    Ad Valorem and Personal Property Taxes. Ad valorem and
                  personal property and similar obligations on the Assets the
                  Seller transfers under this Agreement are the obligation of
                  Seller for periods before the Closing Date and are the
                  obligation of the Buyer for periods after the Closing Date.
                  All such taxes will be prorated as of the Closing Date.

         7.3.2    Income Taxes. Each party shall be responsible for its own
                  state income and federal income taxes, if any, as may result
                  from this transaction.

         7.3.3    Sales and Use Taxes. Buyer will be responsible for all sales,
                  use and similar taxes applicable to the transfer of the
                  Assets. If Seller is required to pay such sales, use or
                  similar taxes on behalf of Buyer, Buyer will reimburse Seller
                  for such taxes paid by Seller.

         7.3.4    Incidental Expenses. Each party shall bear its own respective
                  expenses incurred in connection with the negotiation and
                  Closing of this transaction, including it own consultants'
                  fees, attorneys' fees, accountants' fees, and other similar
                  costs and expenses.

             ARTICLE 8. RETAINED AND ASSUMED RIGHTS AND OBLIGATIONS

8.1      Buyer's Rights After Closing. Upon and after Closing, Buyer will
         receive and assume all of Seller's right, title and interest to the
         Assets, as of the Closing Date.

8.2      Buyer's Obligations After Closing. Upon and after Closing, Buyer will
         unconditionally and irrevocably assume, pay, perform and discharge all
         of the liabilities, obligations and duties with respect to the
         ownership of the Assets on or after the Closing Date, except as
         otherwise provided in this Agreement (the "Buyer's Assumed
         Obligations"). The Buyer's Assumed Obligations include without
         limitation:


                                 Page 76 of 86
<PAGE>


         8.2.1    All performance obligations under the Contracts the Buyer
                  receives that are attributable to and accrue in the period on
                  and after the Closing Date;

         8.2.2    All Claims (as defined in Section 8.4.1) arising from Buyer's
                  ownership or operating of the Assets on and after the Closing
                  Date; and

         8.2.3    All Claims (as defined in Section 8.4.1) arising from any
                  inaccuracy in any representations or warranties of Buyer under
                  this Agreement.

         8.2.4    All warranty obligations, expressed or implied, of Buyer with
                  respect to the Jupiter and Galileo products sold or services
                  rendered by Buyer after the Closing Date.

         8.2.5    All Claims arising out of any suits, claims or proceedings
                  brought or asserted by a third party and which are alleged to
                  have arisen or are attributable to the period on or after the
                  Closing Date.

8.3      Seller's Obligations After Closing. After Closing, Seller will retain
         responsibility for all liabilities, obligations and duties with respect
         to the ownership of the Assets before the Closing Date, except as
         otherwise specifically provided in this Agreement (the Seller's
         Retained Obligations"). The Seller's Retained Obligations include
         without limitation:

         8.3.1    All performance obligations under the Contracts that are
                  attributable to and accrue in the period before the Closing
                  Date;

         8.3.2    All Claims (as defined in Section 8.4.1) arising from Seller's
                  ownership or operation of the Assets before the Closing Date.

         8.3.3    All Claims (as defined in Section 8.4.1) arising from any
                  inaccuracy in any representations or warranties of Seller
                  under this Agreement.

         8.3.4    All warranty obligations, expressed or implied, of Seller with
                  respect to the Jupiter and Galileo products sold or services
                  rendered by Seller on or prior to the Closing Date and as set
                  forth in Schedule 8.3.4 hereto ("Warranty Obligations").
                  Seller and Buyer agree that Buyer will perform the services
                  necessary to fulfill the Warranty Obligation that continue
                  after the Closing Date, and that Seller shall pay all direct
                  material and labor costs, plus a ten percent (10%) mark-up,
                  borne by Buyer to fulfill such Warranty Obligations that
                  continue after the Closing date.

         8.3.5    All Claims arising out of any suits , claims or proceedings
                  brought or asserted by a third party and which are alleged to
                  have arisen or are attributable to the period prior to the
                  Closing Date.

8.4      Indemnities.


                                 Page 77 of 86
<PAGE>


         8.4.1    Definition of Claims. As used in this Agreement, the term
                  "Claims" means any and all losses, liabilities, damages,
                  obligations, expenses, fines, penalties, costs, claims, causes
                  of action and judgments for: (i) breaches of contract; (ii)
                  loss or damage to property, injury to or death of persons, and
                  other tortious injury; (iii) liability assessments due to
                  strict liability of which notice has been given by the
                  relevant third party, and (iv) violations of which notice has
                  been given by the relevant third party of published, binding
                  and applicable laws, rules, regulations, orders or any other
                  legal right or duty actionable at law or equity. The term
                  "Claims" also includes reasonable attorneys; fees, court
                  costs, and other reasonable costs of litigation resulting from
                  the defense of any claim or cause of action within the scope
                  of the indemnities in this Agreement.

         8.4.2    Application of Indemnities. All indemnities set forth in this
                  Agreement extend to the officers, directors, employees and
                  affiliates of the party indemnified. The indemnities set forth
                  in this Agreement do not extend to any part of an indemnified
                  Claim to the extent caused by the negligence, willful
                  misconduct or fraud of the indemnified party or the result of
                  the imposition of punitive damages on the indemnified party.

         8.4.3    Seller's Indemnity. To the extent that Buyer is not otherwise
                  indemnified pursuant to indemnification provisions of
                  Contracts that have been conveyed, transferred and assigned to
                  Buyer in connection with this Agreement, Seller shall
                  indemnify, defend and hold Buyer harmless from and against any
                  and all Claims caused by, resulting from or incidental to
                  Seller's Retained Obligations described in Section 8.3 of this
                  Agreement, to the extent such Claims related to the Assets.

         8.4.4    Buyer's Indemnity. Buyer shall indemnify, defend and hold
                  Seller harmless from and against any and all Claims caused by,
                  resulting from or incidental to Buyer's Assumed Obligations
                  set forth in Section 8.2 of this Agreement, to the extent such
                  Claims relate to the Assets.

         8.4.5    Notices and Defense of Claims. Each party shall immediately
                  notify the other affected party of any Claim of which it
                  becomes aware and for which it is entitled to indemnification
                  from the other party under this Agreement. The indemnifying
                  party shall be obligated to defend at the indemnifying party's
                  sole expense any litigation or other administrative or
                  adversarial proceeding against the indemnified party relating
                  to any Claim for which the indemnifying party has agreed to
                  indemnify and hold the indemnified party harmless under this
                  Agreement. However, the indemnified party shall have the right
                  to participate with the indemnifying party in the defense of
                  any such Claim at its own expense.

         8.4.6    Limitations.


                                 Page 78 of 86
<PAGE>


                  (i)      Each warranty, covenant and agreement of indemnity
                           contained in this Agreement shall survive the Closing
                           and the delivery of instruments of conveyance by the
                           parties hereto, and shall not be deemed to have been
                           superseded by the terms and conditions of the
                           instruments delivered at the Closing. All warranties,
                           representations and agreements of indemnity shall
                           survive for a period of one (1) year from the Closing
                           Date, except Buyer's obligation sunder Section 8.2.4
                           and Seller's obligations under Section 8.3.4 which
                           shall survive without any limitation.

                  (ii)     In calculating the amount of any Claim for which any
                           indemnifying person is liable under this Section 8.4,
                           there shall be taken into consideration the value of
                           any federal or state income tax effects on, or
                           insurance amounts recovered by, the indemnified
                           person that result from the circumstances to which
                           the Claim related or from which the Claim arose.

         8.4.7    Limitation of Seller's Liability.

                  (i)      Notwithstanding anything to the contrary contained in
                           this Agreement, after the Closing, the aggregate
                           liability of the Seller for any Claim, individually
                           or in the aggregate with all other Claims covered by
                           this Agreement, for which indemnification is required
                           by Seller pursuant to Section 8.4.3, shall be limited
                           to the full amount of the adjusted Cash
                           Consideration. Buyer agrees to hold Seller harmless
                           for any Claims greater than such amount.

                  (ii)     The Buyer is entitled to indemnification pursuant to
                           this Agreement only to the extent that the amount of
                           any Claim, individually or in the aggregate with all
                           other Claims covered by this Agreement, exceeds Ten
                           Thousand Dollars ($10,000) and is not a Buyer's
                           Assumed Obligation.

         8.4.8    Limitation of Buyer's Liability.

                  (i)      Notwithstanding anything to the contrary contained in
                           this Agreement, after the Closing, the aggregate
                           liability of the Buyer for any Claim, individually or
                           in the aggregate with all other Claims covered by
                           this Agreement, for which indemnification is required
                           by a Buyer pursuant to Section 8.4.4, shall be
                           limited to the full amount of the adjusted Cash
                           Consideration. Seller agrees to hold Buyer harmless
                           for any Claims greater than such amount.

                  (ii)     The Seller is entitled to indemnification pursuant to
                           this Agreement only to the extent that the amount of
                           any Claim, individually or in


                                 Page 79 of 86
<PAGE>


                           the aggregate with all other Claims covered by this
                           Agreement, exceeds Ten Thousand Dollars ($10,000) and
                           is not a Seller's Retained Obligation.

         8.4.9    Limitation on Claims. Neither party to this Agreement shall
                  make a claim against the other party to this Agreement except
                  pursuant to and subject to the limitations contained in, this
                  Section 8.4.

         8.4.10   Inconsistent Provisions. The provisions of this Section 8.4
                  shall govern and control over any inconsistent provisions of
                  this Agreement.

                       ARTICLE 9. MISCELLANEOUS PROVISIONS

9.1      Notices. All notices under this Agreement must be in writing. Any
         notice under this Agreement may be given by personal delivery,
         facsimile transmission, U.S. mail (postage prepaid), or commercial
         delivery service, and will be deemed duly given when received by the
         party charged with such notice and addressed as follows:

                     Buyer                               Seller
                     -----                               ------

         Innovative Transducers Inc.             Bison Instruments, Inc.
         17200 Park Row                          5610 Rowland Road
         Houston, Texas 77084-4925               Minneapolis, Minnesota
                                                 55343-8956
         Attn.: Sam Bull                         Attn.: Larry Martin
         Fax: 281-579-8656                       Fax: 612-931-0997

         with required copy (which shall not constitute notice) to:

         Tech-Sym Corporation
         10500 Westoffice Drive, Suite 200
         Houston, Texas 77042-5391
         Attn.: General Counsel
         Fax: 713-780-3524

         Either party, by written notice to the other, may change the address or
         the individual to which or to whom notices are to be sent under this
         Agreement.

9.2      Public Announcements. Neither party may make press releases or other
         public announcements concerning this transaction, without the other
         party's prior written approval and agreement to the form of the
         announcement except: (a) as may be required by applicable laws or rules
         and regulation of any governmental agency or stock exchange; and (b)
         Seller may disclose the transaction to its shareholders in writing and
         by announcement.


                                 Page 80 of 86
<PAGE>

9.3      Survival or Representations and Warranties. All of the representations,
         warranties, indemnities and other agreements of or by the parties to
         this Agreement shall survive the execution and delivery of the closing
         documents and the transfer of assets between the parties.

9.4      Exhibits. The Exhibits attached to this Agreement are incorporated into
         and make a part of this Agreement. In the event of a conflict between
         the provisions of the Exhibits or the executed Closing documents and
         the foregoing provisions of this Agreement, the provisions of this
         Agreement shall take precedence. The omission of certain provisions of
         this Agreement from the Closing documents does not constitute a
         conflict between this Agreement and the Closing documents and will not
         effect of merger of the omitted provisions.

9.5      Integration and Amendment. This Agreement represents the entire
         agreement between the parties, superseding all prior negotiations, and
         may not be amended or modified except by written agreement between duly
         authorized representatives of the parties.

9.6      Successors and Assigns. This Agreement binds and inures to the benefit
         of the parties hereto and their respective permitted successors and
         assigns, and nothing contained in this Agreement, express or implied,
         is intended to confer upon any other person or entity any benefits,
         rights, or remedies.

9.7      Severability. If any provision of this Agreement is found by a court of
         competent jurisdiction to be invalid or unenforceable, that provision
         will be deemed modified to the extent necessary to make it valid and
         enforceable and if it cannot be so modified, it shall be deemed deleted
         and the remainder of the Agreement shall continue and remain in full
         force and effect.

9.8      Counterparts. This Agreement may be executed in counterparts, each of
         which shall constitute an original and all of which shall constitute
         one document.

9.9      Governing Law. This Agreement shall be governed by the laws of the
         State of Texas.

9.10     Arbitration.

         (i)      All disputes, differences or questions arising out of or
                  relating to this Agreement (including, without limitation,
                  those as to the validity, interpretation, breach, violation or
                  termination hereof) shall, at the written request of any party
                  hereto, be finally determined and settled pursuant to
                  arbitration in Wilmington, Delaware by three arbitrators, one
                  to by appointed by Buyer, and one by Seller, and a neutral
                  arbitrator to be appointed by such two appointed arbitrators.
                  The neutral arbitrator shall be an attorney and shall act as
                  chairman. Should (a) either party fail to appoint an
                  arbitrator as hereinabove contemplated within ten (10) days


                                 Page 81 of 86
<PAGE>


                  after the party not requesting arbitration has received such
                  written request, or (b) the two arbitrators appointed by or on
                  behalf of the parties as contemplated by this Section 9.10
                  fail to appoint a neutral arbitrator as hereinabove
                  contemplated within ten (10) days after the date of the
                  appointment of the last arbitrator appointed, then any person
                  sitting as a Judge of the United Stated District Court for a
                  district covering Wilmington, Delaware, upon application of
                  Seller or of Buyer, shall appoint an arbitrator to fill such
                  position with the same force and effect as though such
                  arbitrator had been appointed as hereinabove contemplated.

         (ii)     The arbitration proceeding shall be conducted in accordance
                  with the Rules of the American Arbitrator Association. A
                  determination, award of other action shall be considered the
                  valid action of the arbitrators if supported by the
                  affirmative vote of two or three of the three arbitrators. The
                  costs of arbitration (exclusive of extending the arbitration,
                  and of the fees and expenses of legal counsel to such party,
                  all of which shall be borne by such party) shall be shared
                  equally by Buyer and Seller. This arbitration award shall be
                  final and conclusive and shall receive recognition, and
                  judgment upon such award may be entered and enforced in any
                  court of competent jurisdiction.

         IN WITNESS WHEREOF, the authorized representatives of the Parties
         executed this Agreement on the date indicated in the opening paragraph
         of this Agreement.

INNOVATIVE TRANSDUCERS INC.                BISON INSTRUMENTS, INC.

By:  /s/ Philip "Sam" Bull                 By:  /s/ Lawrence M. Martin
     -------------------------------            --------------------------------
Name:  Philip "Sam" Bull                   Name:  Lawrence M. Martin
Title: President                           Title: General Manager


                                 Page 82 of 86


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