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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                  FORM 10-K/A
                               (Amendment No. 1)

(MARK ONE)
[X]      ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
         OF THE SECURITIES EXCHANGE ACT OF 1934

         FOR THE FISCAL YEAR ENDED DECEMBER 31, 2002

[ ]      TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
         OF THE SECURITIES EXCHANGE ACT OF 1934

         FOR THE TRANSITION PERIOD FROM                  TO
                                        ----------------    ------------------

                         COMMISSION FILE NUMBER 1-10235

                                IDEX CORPORATION
             (Exact Name of Registrant as Specified in its Charter)


                                            
                  DELAWARE                                      36-3555336
       (State or other jurisdiction of                       (I.R.S. Employer
       incorporation or organization)                       Identification No.)

              630 DUNDEE ROAD,
            NORTHBROOK, ILLINOIS                                   60062
  (Address of principal executive offices)                      (Zip Code)


                 Registrant's telephone number: (847) 498-7070

          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:



             TITLE OF EACH CLASS                 NAME OF EACH EXCHANGE ON WHICH REGISTERED
             -------------------                 -----------------------------------------
                                            
   COMMON STOCK, PAR VALUE $.01 PER SHARE                 NEW YORK STOCK EXCHANGE
                                                          CHICAGO STOCK EXCHANGE


        SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: NONE

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  YES [X]     NO [ ]

     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [X]

     Indicate by check mark whether the registrant is an accelerated filer (as
defined in Exchange Act Rule 12b-2) YES [X]     NO [ ]

     The aggregate market value of the voting stock held by non-affiliates of
IDEX Corporation as of December 31, 2002 was $891,691,395.

     The number of shares outstanding of IDEX Corporation's common stock, par
value $.01 per share (the "Common Stock"), as of January 31, 2003 was 32,504,959
(net of treasury shares).

                      DOCUMENTS INCORPORATED BY REFERENCE

     Portions of the definitive Proxy Statement of IDEX Corporation (the "2003
Proxy Statement") with respect to the 2003 annual meeting of shareholders are
incorporated by reference into Part III of this Form 10-K/A.

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                                EXPLANATORY NOTE

This Form 10-K/A is being filed as an amendment to our Annual Report on Form
10-K for the fiscal year ended December 31, 2002 to amend Part III, Item 12
Security Ownership of Certain Beneficial Owners and Management and Related
Stockholder Matters and Item 14 Controls and Procedures. In addition, Part III,
Item 14 is renumbered as Item 15.

                                    PART III

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND
RELATED STOCKHOLDER MATTERS.


     Information regarding security ownership of certain beneficial owners and
management and related stockholder matters is incorporated herein by reference
to the information set forth under the captions "Security Ownership" on pages 8
and 9 of the 2003 Proxy Statement and "Proposal 2 -- Approval of the Third
Amended and Restated 1996 Stock Option Plan For Non-Officer Key Employees of
IDEX Corporation" on pages 16 through 19 of the 2003 Proxy Statement.

ITEM 14. CONTROLS AND PROCEDURES.


     The Company maintains disclosure controls and procedures that are designed
to ensure that information required to be disclosed in the Company's Exchange
Act reports is recorded, processed, summarized and reported within the time
periods specified in the SEC's rules and forms, and that such information is
accumulated and communicated to the Company's management, including its Chief
Executive Officer and Chief Financial Officer, as appropriate, to allow timely
decisions regarding required disclosure. In designing and evaluating the
disclosure controls and procedures, management recognized that any controls and
procedures, no matter how well designed and operated, can provide only
reasonable assurance of achieving the desired control objectives, and management
necessarily was required to apply its judgment in evaluating the cost-benefit
relationship of possible controls and procedures.

     Within 90 days prior to the date of this report, the Company carried out an
evaluation, under the supervision and with the participation of the Company's
management, including the Company's Chief Executive Officer and the Company's
Chief Financial Officer, of the effectiveness of the design and operation of the
Company's disclosure controls and procedures. Based on the foregoing, the
Company's Chief Executive Officer and Chief Financial Officer concluded that the
Company's disclosure controls and procedures were effective.

     There have been no significant changes in the Company's internal controls
or in other factors that could significantly affect the internal controls
subsequent to the date the Company completed its evaluation.

ITEM 15.


     Item 14 in the Form 10-K for the fiscal year ended December 31, 2002 is
renumbered as Item 15.


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                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                          IDEX CORPORATION

                                          By     /s/ WAYNE P. SAYATOVIC
                                            ------------------------------------
                                                     Wayne P. Sayatovic
                                              Senior Vice President -- Finance
                                                and Chief Financial Officer
Date: March 13, 2003


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                                 CERTIFICATIONS

I, Dennis K. Williams, certify that:

     1. I have reviewed this annual report on Form 10-K/A of IDEX Corporation;

     2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this annual
report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this annual report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     (a) Designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this annual report is being prepared;

     (b) Evaluated the effectiveness of the registrant's disclosure controls and
procedures as of a date within 90 days prior to the filing date of this annual
report (the "Evaluation Date"); and

     (c) Presented in this annual report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation as of the
Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent functions):

     (a) All significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to record,
process, summarize and report financial data and have identified for the
registrant's auditors any material weaknesses in internal controls; and

     (b) Any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal controls; and

     6. The registrant's other certifying officers and I have indicated in this
annual report whether there were significant changes in internal controls or in
other factors that could significantly affect internal controls subsequent to
the date of our most recent evaluation, including any corrective actions with
regard to significant deficiencies and material weaknesses.


Date: March 13, 2003
                                                /s/ DENNIS K. WILLIAMS
                                          --------------------------------------
                                          Dennis K. Williams
                                          Chairman, President and
                                          Chief Executive Officer




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I, Wayne P. Sayatovic, certify that:

     1. I have reviewed this annual report on Form 10-K/A of IDEX Corporation;

     2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this annual
report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this annual report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

     (a) Designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this annual report is being prepared;

     (b) Evaluated the effectiveness of the registrant's disclosure controls and
procedures as of a date within 90 days prior to the filing date of this annual
report (the "Evaluation Date"); and

     (c) Presented in this annual report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation as of the
Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent functions):

     (a) All significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to record,
process, summarize and report financial data and have identified for the
registrant's auditors any material weaknesses in internal controls; and

     (b) Any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal controls; and

     6. The registrant's other certifying officers and I have indicated in this
annual report whether there were significant changes in internal controls or in
other factors that could significantly affect internal controls subsequent to
the date of our most recent evaluation, including any corrective actions with
regard to significant deficiencies and material weaknesses.


Date: March 13, 2003
                                                /s/ WAYNE P. SAYATOVIC
                                          --------------------------------------
                                          Wayne P. Sayatovic
                                          Senior Vice President -- Finance and
                                          Chief Financial Officer



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