Document:

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                                                                   EXHIBIT 10.36
                             AMENDMENT NO. 2 TO THE
                          1997 STOCK INCENTIVE PLAN OF
                                  AMETEK, INC.

         WHEREAS, AMETEK, Inc. (formerly known as Ametek Aerospace Products,
Inc.) (the "Company") has adopted the 1997 Stock Incentive Plan of AMETEK, Inc.
(formerly known as the 1997 Stock Incentive Plan of Ametek Aerospace Products,
Inc.) (the "Plan"); and

         WHEREAS, Section 19 of the Plan permits the Committee, as defined in
the Plan (the "Committee") to amend the Plan; and

         WHEREAS, the Committee now desires to amend the Plan in certain
respects;

         NOW, THEREFORE, the Plan is hereby amended as follows:

         1.       Section 5 shall be amended to read in its entirety as follows:
                  "5. Participants. All key employees of the Corporation and its
                  Affiliates shall be eligible to receive Incentive Awards under
                  the Plan. The persons to whom Incentive Awards are to be
                  offered under the Plan and the number of Shares with respect
                  to which Incentive Awards are to be granted to each such
                  person shall be determined by the Committee in its sole
                  discretion subject, however, to the terms and conditions of
                  the Plan."

         2.       The provisions of this Amendment No. 2 shall be effective as
                  of May 11, 1999.

         IN WITNESS WHEREOF, the Committee has caused this Amendment No. 2 to be
executed by a duly authorized officer of the Company, and its corporate seal to
be affixed, as of the 11th day of May, 1999.

                                         AMETEK, Inc.

                                         By: /s/ John J. Molinelli
                                             -----------------------------
ATTEST:
/s/ Donna F. Winquist
----------------------
(SEAL)<PAGE>   1
                                                                   EXHIBIT 10.40

                                 AMENDMENT NO. 1

                                     TO THE

                                  AMETEK, INC.
                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

         WHEREAS, there was adopted and made effective as of May 1, 1997, the
AMETEK, Inc. Supplemental Executive Retirement Plan (the "Plan"); and

         WHEREAS, Section 7.1 of the Plan provides that theAdministrator of the
Plan (defined as a committee consisting of AMETEK's Chief Executive Officer,
Chief Financial Officer and Corporate Counsel) may amend the Plan at any time or
from time to time as long as the amendment does not significantly increase the
cost of the Plan to the Company; and

         WHEREAS, AMETEK now desires to amend the Plan in certain respects;

         NOW, THEREFORE, the Plan is hereby amended as follows:

         FIRST: The second sentence of Section 4.1 of the Plan shall be amended
to read, in its entirety, as follows:

         "Such distribution shall be made (i) within 30 days after the date of
         the Participant's Separation from Employment, or (ii) such other date
         as is mutually agreed upon by the Company and the Participant."

         SECOND: The second sentence of Section 4.2 of the Plan shall be amended
to read, in its entirety, as follows:

         "Such distribution shall be made (i) within 30 days after the date of
         the Participant's death, or (ii) such other date as is mutually agreed
         upon by the Company and the Beneficiary."

         THIRD: The provisions of this Amendment shall be effective as of August
1, 1999.

<PAGE>   2

         IN WITNESS WHEREOF, the Administrator of the Plan has caused this
amendment to be executed on this 2nd day of September 1999.

                                         ADMINISTRATOR

                                         /s/ Walter E. Blankley
                                         ------------------------
                                         Walter E. Blankley

                                         /s/ John J. Molinelli
                                         ------------------------
                                         John J. Molinelli

                                         /s/ Donna F. Winquist
                                         ------------------------
                                         Donna F. Winquist<PAGE>   1
                                                                   EXHIBIT 10.43

                                    AMENDMENT

                                     TO THE

                           EMPLOYEES' RETIREMENT PLAN
                                 OF AMETEK, INC.

                                 AMENDMENT NO. 1

         WHEREAS, there was adopted and made effective as of December 29, 1942,
the Employees' Retirement Plan of AMETEK, Inc. (the "Plan"); and

         WHEREAS, the Plan was amended and restated in its entirety, effective
January 1, 1998; and

         WHEREAS, Section 9.2 of the Plan provides that AMETEK, Inc. ("AMETEK")
may amend the Plan at any time or from time to time; and

         WHEREAS, AMETEK now desires to amend the Plan in certain respects;

         NOW, THEREFORE, the Plan is hereby amended as follows:

         FIRST: Section 1.18 of the Plan is amended by adding the following to
the end of the first sentence:

         "or any person who is hired as a temporary employee or intern"

         SECOND: The provisions of this Amendment No. 1 shall be effective as of
January 1, 1998.

         IN WITNESS WHEREOF, AMETEK has caused these presents to be executed in
its corporate name, by its duly authorized officer on this 31st day of March,
1998.

                                                AMETEK, Inc.

                                                By: /s/ Donna F. Winquist
                                                    -----------------------

Attest:

/s/ Kathryn E. Londra
----------------------<PAGE>   1

                                                                   EXHIBIT 10.44
                                    AMENDMENT

                                     TO THE

                           EMPLOYEES' RETIREMENT PLAN
                                 OF AMETEK, INC.

                                 AMENDMENT NO. 2

         WHEREAS, there was adopted and made effective as of December 29, 1942,
the Employees' Retirement Plan of AMETEK, Inc. (the "Plan"); and

         WHEREAS, the Plan was amended and restated in its entirety, effective
January 1, 1998; and

         WHEREAS, Section 9.2 of the Plan provides that AMETEK, Inc. ("AMETEK")
may amend the Plan at any time or from time to time; and

         WHEREAS, AMETEK now desires to amend the Plan in certain respects;

         NOW, THEREFORE, the Plan is hereby amended as follows:

         FIRST: A new Appendix XXXI is hereby added to the Plan, to read in its
entirety as follows:

                                  APPENDIX XXXI

                     SPECIAL PROVISIONS RELATING TO CERTAIN
                EMPLOYEES OF THE TEST AND CALIBRATION INSTRUMENTS
                            DIVISION OF AMETEK, INC.
           ----------------------------------------------------------

                  1. Those employees of Test and Calibration Instruments, a
         division of AMETEK, Inc., who are already Participants in the Plan as
         of December 31, 1998 shall be eligible to remain Participants under the
         Plan in accordance with and subject to the provisions in the Plan,
         after the absorption of Mansfield and Green, a division of AMETEK,
         Inc., by John Chatillon & Sons, Inc., a subsidiary of AMETEK, Inc., on
         January 1, 1999.

                  2. Except to the extent set forth above, defined terms used in
         this Appendix XXXI shall have the same meaning as used in the Plan.

<PAGE>   2

         SECOND: The provisions of this Amendment No. 2 shall be effective as of
January 1, 1999.

         IN WITNESS WHEREOF, AMETEK has caused these presents to be executed in
its corporate name, by its duly authorized officer on this 30th day of November,
1998.

                                         AMETEK, Inc.

                                         By:  /s/ Donna F. Winquist
                                             --------------------------

Attest:

/s/ Kathryn E. Londra
----------------------<PAGE>   1
                                                                   EXHIBIT 10.45

                                    AMENDMENT
                                     TO THE
                           EMPLOYEES' RETIREMENT PLAN
                                 OF AMETEK, INC.

                                 AMENDMENT NO. 3

         WHEREAS, there was adopted and made effective as of December 29, 1942,
the Employees' Retirement Plan of AMETEK, Inc. (the "Plan"); and

         WHEREAS, the Plan was amended and restated in its entirety, effective
January 1, 1998 to incorporate all prior amendments; and

         WHEREAS, Section 9.2 of the Plan provides that AMETEK, Inc. ("AMETEK")
may amend the Plan at any time or from time to time; and

         WHEREAS, AMETEK now desires to amend the Plan in certain respects;

         NOW, THEREFORE, the Plan is hereby amended as follows:

         FIRST: Section 6.1(a) is amended in its entirety to read as follows:

                  "(a) 'Companion Plan' shall mean each such pension, stock
         bonus or profit-sharing plan (other than this Plan and the 401(k)
         feature of the AMETEK Retirement and Savings Plan) maintained by the
         Employer or any Affiliated Company, or to which the Employer or any
         Affiliated Company makes contributions and which is a qualified plan
         pursuant to the provisions of Section 401(a) of the Code."

         SECOND: The provisions of this Amendment No. 3 shall be effective as of
May 1, 1999.

         IN WITNESS WHEREOF, AMETEK has caused these presents to be executed in
its corporate name, by its duly authorized officer on this 17th day of May,
1999.

                                          AMETEK, Inc.

                                          By: /s/ Donna F. Winquist
                                             -----------------------

Attest:

/s/ Kathryn E. Londra
----------------------

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