Exhibit 10.9
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First Amendment to Marquette Electronics, Inc. 
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Profit Sharing and 401(k) Plan and Trust 
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(as Restated and Amended)
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                  WHEREAS, effective April 30, 1993, the Corporation, by
resolution of its Board of Directors, adopted the Marquette
Electronics, Inc. Profit Sharing and 401(k) Plan and Trust (as Restated
and Amended) ("the Plan"); and

                  WHEREAS, pursuant to Section 2.6 of the Plan, employees of
any wholly owned subsidiary of the Corporation are deemed Employees under the
Plan, provided that said subsidiary agrees to become a Participating Employer
pursuant to Article XVII of the Plan; and

                  WHEREAS, Section 13.1 of the Plan allows the Corporation to
amend the Plan from time to time; and

                  WHEREAS, on May 31, 1994, the Corporation acquired all of the
issued and outstanding stock of Corometrics Medical Systems, Inc., a Delaware
corporation ("Corometrics"); and

                  WHEREAS, prior to such acquisition, certain employees of
Corometrics participated in the American Home Products Corporation Savings Plan
(the "AHPC Savings Plan"), a pension plan qualified under Section 401(a) of the
Internal Revenue Code; and

                  WHEREAS, the AHPC Savings Plan held accounts for certain
employees of Corometrics which were funded by the following:

      (a) Funds arising from qualified voluntary employee contributions made
prior to January 1, 1987 ("QVEC Contributions"); and

      (b) Stock in American Home Products Corporation, a Delaware corporation 
("AHPC Stock"); and

 
                    WHEREAS, prior to such acquisition, certain employees of
Corometrics had borrowed money from the AHPC Savings Plan, which loan
obligations were payable more than five years from the date the loans
were made (the "Extended Obligation Loans"); and

                    WHEREAS, effective June 1, 1994, Corometrics became a
Participating Employer under Article XVII of the Plan; and

                    WHEREAS, in connection with the Corporation's acquisition
of the stock of Corometrics and the participation by certain employees of
Corometrics in the Plan, the AHPC Savings Plan has tendered to the Plan trustee,
among other items, the following assets of the AHPC Savings Plan:
     
     (a) Accounts of Corometrics employees which are funded by QVEC
Contributions;
     
     (b) Accounts of Corometrics employees which are funded by AHPC
Stock; and
     
     (c) The Extended Obligation Loans.
  
          All of which assets the Plan Trustee wishes to accept on behalf of
Corometrics Employees who have now become participants in the Plan;

          NOW, THEREFORE, BE IT RESOLVED, that effective as of August 1, 1994,
the Plan is amended as follows:

     A. Section 6.4(c) of the Plan be and is hereby replaced by the following:

     "(c) All Matching Accounts, 401(k) Accounts, Rollover Accounts, QVEC
     Accounts, AHPC Accounts, and Transfer Accounts are 100% vested. Such
     Accounts are described in Sec. 7.1."

     B. Section 7.1 of the Plan be and is hereby amended by adding the following
paragraphs:

        "(h) A QVEC Account shall be established for each Participant who has
     contributed before January 1, 1987, qualified voluntary employee
     contributions, within the meaning of Code Section 219(e)(2) as it existed
     prior to the Tax Reform Act of 1986, to a separate account established by
     the American Home Products Corporation Savings Plan ("AHPC Savings Plan")
     for such contributions for said Participant, which account has been
     transferred to and become an asset of the Plan. The QVEC Account shall
     consist of such separate account plus any earnings thereon. No additional
     contributions shall be made to the QVEC Account by the Employer or the
     Participant.

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                 "(i) An AHPC Account shall be established for each Participant
           on whose behalf stock in American Home Products Corporation, a
           Delaware corporation ("AHPC") was held on May 31, 1994 in a separate
           account established by the AHPC Plan and which has been transferred
           to and acquired by the Plan in connection with the Employer's
           purchase of the stock of Corometrics Medical Systems, Inc., a
           Delaware corporation ("Corometrics"). The AHPC Account shall consist
           only of the AHPC stock held in such separate account on May 31, 1994,
           plus any distributions on such stock which are in the form of
           additional shares of AHPC stock. The AHPC Account for a Participant
           shall not be commingled with other accounts of the Participant, with
           accounts of other Participants, or with other assets of the Trust. No
           additional contributions shall be made to the AHPC Account by the
           Employer or the Participant."
           
           C. Section 7.3 of the Plan be and is hereby replaced by the
following:

               "Sec. 7.3 Investment of Accounts. Each Participant (or each
           Beneficiary following the death of the Participant) shall direct the
           investment of his Accounts, excluding any Forfeiture Account and the
           AHPC stock in any AHPC Account, into any of the Funds selected by the
           Employer and made available to the Plan. Accounts other than the
           Forfeiture Account and the AHPC Account are referred to in this
           section as 'directed' Accounts. The Employer and Trustee may agree to
           add additional investment options or delete existing investment
           options at any time. The Forfeiture Accounts and the AHPC stock in
           AHPC Accounts shall be invested as provided herein."
      
           D. Section 7.3 of the Plan be and is hereby amended by adding the
following paragraph:

              "(d) Except as otherwise specified herein, the procedure
           established by Sec. 7.3(a) for the investment of directed accounts
           shall apply to AHPC Accounts. If all or a part of the AHPC stock in
           an AHPC Account is sold or redeemed, or if cash dividends or other
           forms of cash payments are received on account of the AHPC stock, the
           proceeds shall be placed in a separate Regular Account for the
           individual. Thereafter, each such separate Account so created shall
           be treated in all respects as the corresponding type of Account under
           this Plan, except that no contributions or Forfeitures under this
           Plan shall ever be added to such a separate Account and in the event
           of the individual's Termination of Service entitling him to a benefit
           under Sec. 9.2 his vested percentage in each such separate Account
           shall be 100%. The voting rights for the AHPC stock in an AHPC

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           Account shall be exercised by the Trustee. A Participant may not
           purchase new or additional stock in AHPC for an AHPC Account after
           May 31, 1994."

           E. Section 7.6 of the Plan be and is hereby amended by replacing the
first sentence with the following two sentences:

              "Sec. 7.6. Transfers from Other Plans. With the consent of the
           Employer, which shall be granted in its sole discretion and only if
           it determines that the transfer of funds is consistent with the
           provisions of the Internal Revenue Code, the Plan may accept a direct
           transfer from another plan of funds credited to a Qualified
           Individual under such other plan (provided such plan is a qualified
           plan under Code Section 401). Further, the Plan shall accept stock in
           AHPC which was credited to the Account of an employee of Corometrics
           on or prior to May 31, 1994 under the AHPC Savings Plan."

           F. Section 7.6 of the Plan be and is hereby amended by adding the
following at the end of the last sentence: 

           "; however, if the individual is already a Participant under Section
           2.6 and Article XVII of the Plan, then he shall immediately be
           entitled to the same treatment as other Participants."

           G. Section 9.5(d) of the Plan be and is hereby replaced by the
following:

              "(d) Each loan shall be amortized by payment of principal and
           interest in equal quarterly or more frequent installments. The
           Employer may require that loans must be repaid by payroll deductions
           to the extent possible. Except for loans which were outstanding to a
           Corometrics employee under the AHPC Savings Plan on or before May 31,
           1994, and which have been transferred to and acquired by the Plan in
           connection with the Employer's purchase of the stock of Corometrics,
           all loans shall provide for repayment of principal and interest not
           more than five years from the date the loan is made. In addition,
           beginning with the calendar year in which the Participant reaches age
           70 1/2, the Employer may require any additional loan repayments which
           it determines are necessary to provide funds for distributions
           required to be made pursuant to Section 10.1."

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