THIS PAPER DOCUMENT IS BEING SUBMITTED PURSUANT 
                TO RULE 902(g) OF REGULATION S-T

               SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C.  20549
                                
                                                
                          SCHEDULE 13D
                       (Amendment No. 28)
                                
                                                
            Under the Securities Exchange Act of 1934
                                 
                       IDEX CORPORATION                
                        (Name of Issuer)
                                
                        
             Common Stock Par Value $0.01 Per Share     
                (Title of Class and Securities) 
                                
                                                
                           45167R104                  
              (CUSIP Number of Class of Securities)
                                                
                                                
                                                
              James E. McKee, Gabelli Funds, Inc.,
 One Corporate Center, Rye, New York 10580-1434, (914) 921-5067
    (Name, Address and Telephone Number of Person Authorized
             to Receive Notices and Communications)
                                
                                                
                     November 8, 1995                       
     (Date of Event Which Requires Filing of this Statement)
                                

If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this State-
ment because of Rule 13D-1(b)(3) or (4), check the following box:
                                                        ____     
                                                       /___/ 


Check the following box if a fee is being paid with this Statement:
                                                       ____
                                                      /   /

_________________________________________________________________

CUSIP No. 45167R104                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      Gabelli Funds, Inc.            I.D. No. 13-3056041
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
                                                     /   /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     803,900 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None    (Item 5) 
 OWNED BY EACH REPORTING                :________________________
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     803,900 (Item 5)
                                        :________________________
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None    (Item 5)  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      803,900   (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      4.20%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      HC, IA, CO
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT!  
_____________________________________

CUSIP No. 45167R104                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
      GAMCO Investors, Inc.              I.D. No. 13-2951242
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      OO:  Funds of investment advisory clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)         ____
                                                     /x___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     1,377,250 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None 
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     1,558,000 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      1,558,000 (Item 5)
_________________________________________________________________

(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                        ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      8.15%      
________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IA, CO
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT!   
_______________________________________

CUSIP No. 45167R104                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
     Mario J. Gabelli                  I.D. No. ###-##-####
_________________________________________________________________ 
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
     None
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     / x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      USA 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     None (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     None (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     None (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.00%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!
Item 1.Security and Issuer

          This Amendment No. 28 to Schedule 13D on Idex 
Corporation (the "Issuer") is being filed on behalf of the
undersigned to amend the Schedule 13D, as amended (the "Schedule
13D") which was originally filed on June 16, 1989.  Unless
otherwise indicated, all capitalized terms used herein but not
defined herein shall have the same meaning as set forth in the
Schedule 13D.

Item 2.   Identity and Background
          This statement is being filed by Mario J. Gabelli ("Mr.
Gabelli") and various entities which he directly or indirectly
controls or for which he acts as chief investment officer.  These
entities, except for Lynch Corporation ("Lynch"), Spinnaker
Industries, Incorporated ("Spinnaker"), Western New Mexico
Telephone Company ("Western New Mexico"), Entoleter, Inc.
("Entoleter"),  Lynch Telecommunications Corporation ("Lynch
Telecom"), Lynch Telephone Corporation ("Lynch Telephone") and
Inter-Community Telephone Company ("Inter-Community")
(collectively, "Lynch and its affiliates"), engage in various
aspects of the securities business, primarily as investment
adviser to various institutional and individual clients, includ-
ing registered investment companies and pension plans, as
broker/dealer and as general partner of various private invest-
ment partnerships.  Certain of these entities may also make
investments for their own accounts. 
          The foregoing persons in the aggregate often own
beneficially more than 5% of a class of equity securities of a
particular issuer.  Although several of the foregoing persons are
treated as institutional investors for purposes of reporting
their beneficial ownership on the short-form Schedule 13G, the
holdings of those who do not qualify as institutional investors
may exceed the 1% threshold presented for filing on Schedule 13D
or implementation of their investment philosophy may from time to
time require action which could be viewed as not completely
passive.  In order to avoid any question as to whether their
beneficial ownership is being reported on the proper form and in
order to provide greater investment flexibility and administra-
tive uniformity, these persons have decided to file their benefi-
cial ownership reports on the more detailed Schedule 13D form
rather than on the short-form Schedule 13G and thereby to provide
more expansive disclosure than may be necessary. 
          (a), (b) and (c) - This statement is being filed by one
or more of the following persons: Gabelli Funds, Inc. ("GFI"),
GAMCO Investors, Inc. ("GAMCO"), Gabelli Securities, Inc.
("GSI"), Gabelli & Company, Inc. ("Gabelli & Company"), Gabelli
Performance Partnership L.P. ("GPP"), GLI, Inc. ("GLI"), Gabelli
Associates Fund ("Gabelli Associates"), Gabelli Associates
Limited ("GAL"), Gabelli & Company, Inc. Profit Sharing Plan (the
"Plan"); Gabelli International Limited ("GIL"), Gabelli Interna-
tional II Limited ("GIL II"), Gabelli International Gold Fund
Limited ("GIGFL"), ALCE Partners, L.P. ("ALCE"), Gabelli
Multimedia Partners, L.P. ("Multimedia Partners"), Mr. Gabelli,
Lynch, Spinnaker, Western New Mexico, Entoleter, Lynch Telecom,
Lynch Telephone and Inter-Community. Those of the foregoing
persons signing this Schedule 13D are hereafter referred to as
the "Reporting Persons". 
          GAMCO, a majority owned subsidiary of GFI, is an
investment adviser registered under the Investment Advisers Act
of 1940, as amended ("Advisers Act").  GAMCO is an investment
manager providing discretionary managed account services in the
equity area for employee benefit plans, private investors,
endowments and foundations. 
          Gabelli & Company, a wholly-owned subsidiary of GSI, is
a broker-dealer registered under the Securities Exchange Act of
1934, as amended ("l934 Act"), which as a part of its business
regularly purchases and sells securities for its own account.  
          GLI, a wholly-owned subsidiary of GSI, is a general
partner of G&R Partners, a Delaware partnership ("G&R"), which,
in turn, is the general partner of Gabelli-Rosenthal & Partners,
L.P., a Delaware limited partnership ("G-R"), whose primary busi-
ness purpose is to do friendly leveraged buyouts.  At the present
time, G-R's sole business purpose is to monitor its existing
portfolio investments.
          Gabelli Associates is a New York limited partnership
whose primary business purpose is risk arbitrage investments. 
GSI and Mr. Gabelli are the general partners of Gabelli As-
sociates. 
          GAL is a corporation whose primary business purpose is
risk arbitrage investments.  Shares of GAL's Common Stock will be
offered to persons who are neither citizens nor residents of the
United States and may be offered to a limited number of U.S.
investors.  GSI is the investment manager of GAL.
          GSI, a majority-owned subsidiary of GFI, is a Delaware
corporation which as a part of its business regularly purchases
and sells securities for its own account.  It is the immediate
parent of Gabelli & Company.  
          GFI is the ultimate parent company for a variety of
companies engaged in the securities business, each of which is
named above.  In addition, GFI is an investment adviser
registered under the Advisers Act.  GFI is an investment adviser
which presently provides discretionary managed account services
for The Gabelli Equity Trust Inc., The Gabelli Asset Fund, The
Gabelli Growth Fund, The Gabelli Convertible Securities Fund,
Inc., The Gabelli Value Fund Inc., The Gabelli Small Cap Growth
Fund, The Gabelli Equity Income Fund, The Gabelli ABC Fund, The
Gabelli Global Telecommunications Fund, Gabelli Gold Fund, Inc.,
The Gabelli Global Multimedia Trust Inc., The Gabelli Global
Convertible Securities Fund, Gabelli Capital Asset Fund, Gabelli
International Growth Fund, Inc. and The Gabelli Global
Interactive Couch Potato Fund (collectively, the "Funds"), which
are registered investment companies.
          The Plan, a qualified employee profit sharing plan,
covers substantially all employees of GFI and its affiliates. 
          GPP, a Delaware limited partnership, is a limited
partnership whose primary business purpose is investing in
securities.  Mr. Gabelli is the general partner and chief invest-
ment officer of GPP. 
          GIL is a corporation whose primary business purpose is
investing in a portfolio of equity securities and securities
convertible into, or exchangeable for, equity securities in order
to achieve its investment objective of significant long-term
growth of capital.  Shares of GIL's common stock are offered to
persons who are neither citizens nor residents of the United
States and may be offered to a limited number of U.S. investors. 
The investments of GIL are managed by Mr. Gabelli who is also a
director and Chairman of the Board of Directors of GIL.
          GIL II is a corporation whose business purpose is
investing primarily in a portfolio of equity securities and
securities convertible into, or exchangeable for, equity securit-
ies in order to achieve its investment objective of significant
long-term growth of capital.  Shares of GIL II's common stock are
offered to persons who are neither citizens nor residents of the
United States and may be offered to a limited number of U.S.
investors.  The investments of GIL II are managed by Mr. Gabelli
who is also a director and Chairman of the Board of Directors of
GIL II.
       ALCE is a Delaware investment limited partnership that
seeks long-term capital appreciation primarily through
investments in public and private equity securities.  GSI is a
general partner of ALCE.
       Multimedia Partners is a Delaware investment limited
partnership whose objective is to provide long-term capital
appreciation by investing primarily in public and private
multimedia communications companies.  GSI is a general partner of
Multimedia Partners.
       Lynch, an Indiana corporation, is a diversified public
company traded on the American Stock Exchange.  Its subsidiaries
are engaged in communications, services, and manufactured pro-
ducts.  Spinnaker, a Delaware subsidiary of Lynch, is also a
public company and its stock is traded through the NASDAQ System. 
Spinnaker manufactures and sells industrial-process and air
pollution control equipment.  Another of Lynch's subsidiaries,
Western New Mexico, provides telephone services in a service area
in Southwestern New Mexico.  Inter-Community, which is also a
subsidiary of Lynch, provides local telephone services in an area
40 miles west of Fargo, North Dakota.   Lynch and Spinnaker
actively pursue new business ventures and acquisitions.  Lynch
and its affiliates make investments in marketable securities to
preserve capital and maintain liquidity for financing their
business activities and acquisitions (not in the case of Western
New Mexico) and are not engaged in the business of investing,
reinvesting, or trading in securities.  Mr. Gabelli is Chairman
of Lynch and owns beneficially 24.39% of the shares of Common
stock of Lynch. 
          Mr. Gabelli is the majority stockholder and Chairman of
the Board of Directors and Chief Executive Officer of GFI and the
Chief Investment Officer for each of the Reporting Persons.  GFI,
in turn, is the majority stockholder of GAMCO.  GFI is also the
majority stockholder of GSI.  Gabelli & Company is a wholly-owned
subsidiary of GSI.  GLI is a wholly-owned subsidiary of GSI.
          The Reporting Persons do not admit that they constitute
a group. 
          GFI, GAMCO, Gabelli & Company and GLI are New York
corporations and GSI is a Delaware corporation, each having its
principal business office at One Corporate Center, Rye, New York
10580-1434. GPP is a Delaware limited partnership having its
principal business office at 8 Sound Shore Drive, Greenwich,
Connecticut 06830.  Gabelli Associates is a New York limited
partnership having its principal business office at One Corporate
Center, Rye, New York 10580-1434. GAL and GIL are corporations
organized under the laws of the British Virgin Islands having
their principal business office at c/o MeesPierson (Cayman)
Limited, British American Centre, Dr. Roy's Drive-Phase 3, George
Town, Grand Cayman, British West Indies.  GIL II is a corporation
organized under the laws of the British Virgin Islands having
their principal business office at c/o Coutts & Company (Cayman)
Limited, West Bay Road, Grand Cayman, British West Indies.  Lynch
is an Indiana corporation having its principal business office at
8 Sound Shore Drive, Greenwich, CT 06830.  Spinnaker is a
Delaware corporation having its principal business office at 251
Welton Street, Hamden, CT 06511. 
          For information required by instruction C to Schedule
13D with respect to the executive officers and directors of the
foregoing entities and other related persons (collectively,
"Covered Persons"), reference is made to Schedule I annexed
hereto and incorporated herein by reference. 
          (d) and (e) -  On December 8, 1994, the SEC instituted
and simultaneously accepted offers for the settlement of an
administrative proceeding against Gabelli & Company and GAMCO. 
The order instituting the proceeding included a finding, which
Gabelli & Company and GAMCO neither admitted nor denied, that
they failed to implement and maintain policies and procedures
reasonably designed to prevent the misuse of material, nonpublic
information by not sepecifically addressing the special
circumstances that arose from their affiliation with Lynch
Corporation, a public company.  To resolve this matter, Gabelli &
Company and GAMCO agreed to cease and desist from violating
Section 15(f) of the 1934 Act and Section 204A of the Advisers
Act, respectively.  They further agreed to each pay a civil
penalty in the amount of $50,000, and to retain, and adopt the
recommendations of, an independant consultant regarding their
Section 15(f) and Section 204A policies and procedures.  
          On December 13, 1991, the Virginia State Corporation
Commission entered an order of settlement in final disposition of
matters arising from an allegation that GAMCO had transacted
business in Virginia as an investment adviser without having been
registered as such under Virginia Code Section 13.1-504A or an
exemption therefrom.  GAMCO consented to the entry of the order
without admitting or denying the allegation and without a
hearing.  The terms of the order provide that GAMCO would pay a
fine and costs totalling fifty-five thousand dollars and would
not transact business in Virginia as an investment adviser unless
it was registered as such under section 13.1-504A or was exempt
from registration.  
     (f) - Reference is made to Schedule I hereto. 

Item 5.   Interest In Securities Of The Issuer
          Item 5 to Schedule 13D is amended, in pertinent part,
as follows:
          (a)  The aggregate number and percentage of Securities
to which this Schedule 13D relates is 2,361,900 shares, repre-
senting 12.35% of the 19,125,474 shares outstanding as reported
in the most recently filed Form 10-Q for the quarter ended
September 30, 1995.  The Reporting Persons beneficially own those
Securities as follows: 
                         Shares of           % of
                         Common              Class of
Name                     Stock               Common  

GAMCO 
  As Principal                  0                0.00%
  As Agent              1,558,000                8.15%

GFI
  As Principal                  0                0.00%
  As Agent                803,900                4.20%         

Mario J. Gabelli                0                0.00% 

           Mr. Gabelli is deemed to have beneficial ownership of
the Securities beneficially owned by each of the foregoing
persons and GFI is deemed to have beneficial ownership of the
securities owned beneficially by each of the foregoing persons
other than Mr. Gabelli. 
          (b) Each of the Reporting Persons and Covered Persons has
the sole power to vote or direct the vote and sole power to dispose
or to direct the disposition of the Securities reported for it,
either for its own benefit or for the benefit of its investment
clients or its partners, as the case may be, except that GAMCO
Investors, Inc. does not have authority to vote 180,750 of the
reported shares, and except that GFI has sole dispositive and
voting power with respect to the shares of the Issuer held by the -
The Gabelli Asset Fund, The Gabelli Growth Fund, The Gabelli Equity
Trust, Inc., The Gabelli Convertible Securities Fund, Inc., The
Gabelli Value Fund Inc., The Gabelli Small Cap Growth Fund, The
Gabelli Equity Income Fund, The Gabelli Global Telecommunications
Fund, The Gabelli Global Convertible Securities, The Gabelli Global
Interactive Couch Potato Fund, Gabelli Gold Fund, Inc., The Gabelli
Global Multimedia Trust Inc., The Gabelli Capital Asset Fund,
and/or The Gabelli ABC Fund so long as the aggregate voting
interest of all joint filers does not exceed 25% of their total
voting interest in the Issuer and, in that event, the Proxy Voting
Committee of each Fund (other than The Gabelli Growth Fund) shall
respectively vote that Funds shares, and except that at any time,
the Proxy Voting Committee of each such Fund may take and exercise
in its sole discretion the entire voting power with respect to the
shares held by such fund under special circumstances such as
regulatory considerations, and except that the power of Mr. Gabelli
and GFI is indirect with respect to Securities beneficially owned
directly by other Reporting Persons. 

Signature
            After reasonable inquiry and to the best of my know-
ledge and belief, I certify that the information set forth in this
statement is true, complete and correct. 
Dated:    November 13, 1995

                                   GABELLI FUNDS, INC.  
                                        
                                                            

                                   By:_________________________
                                      James E. McKee
                                      General Counsel

               
                                   GAMCO INVESTORS, INC.  
                                   
                                        
                                   By:_________________________
                                      Douglas R. Jamieson  
                                      Chief Operating Officer
                                      and Executive Vice President
                                   


                                   Mario J. Gabelli

                                   By:____________________________
                                      James E. McKee
                                      Attorney-in-Fact



                                                       Schedule I


              Information with Respect to Executive
            Officers and Directors of the Undersigned 

          Schedule I to Schedule 13D is amended, in pertinent part,
as follows:

          The following sets forth as to each of the executive
officers and directors of the undersigned: his name; his business
address; and his present principal occupation or employment and the
name, principal business and address of any corporation or other
organization in which such employment is conducted.  Unless other-
wise specified, the principal employer of each such individual is
Gabelli Funds, Inc., Gabelli & Company, Inc., or GAMCO Investors,
Inc., the business address of each of which is One Corporate
Center, Rye, New York 10580, and each such individual identified
below is a citizen of the United States.  To the knowledge of the
undersigned, during the last five years, no such person has been
convicted in a criminal proceeding (excluding traffic violations or
similar misdemeanors), and no such person was a party to a civil
proceeding of a judicial or administrative body of competent
jurisdiction as a result of which he was or is subject to a
judgment, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to, federal or state
securities law or finding any violation with respect to such laws
except as reported in Item 2(d) of this Schedule 13D. 
Gabelli Funds, Inc. 

Directors: 

     Mario J. Gabelli


     Richard B. Black              Chairman of Raster Image
                                   Processing Systems; Chairman
                                   ECRM; Director of Archetype
                                   and Oak Technology; Director
                                   of The Morgan Group, Inc.;
                                   General Partner of KBA Part-  
                                   ners, Parker Plaza
                                   400 Kelby Street,
                                   Fort Lee, NJ 07029

     Charles C. Baum               Chairman, Director and Chief
                                   Executive Officer of The
                                   Morgan Group, Inc.;
                                   Secretary & Treasurer
                                   United Holdings              
                                   2545 Wilkens Avenue
                                   Baltimore, MD  21223

     Dr. Eamon M. Kelly            President
                                   Tulane University
                                   218 Gibson Hall
                                   6823 St. Charles Avenue
                                   New Orleans, LA  70118

Officers:

     Mario J. Gabelli              Chairman, Chief Executive
                                   Officer and Chief Investment
                                   Officer
     
     Stephen G. Bondi              Vice President - Finance

     James E. McKee                Vice President, General 
                                   Counsel and Secretary

     Steven M. Joenk               Executive Vice President
                                   and Chief Financial Officer

     Joseph J. Frazzitta           Assistant Secretary


GAMCO Investors, Inc.

Directors:
     Douglas R. Jamieson
     Joseph R. Rindler, Jr.
     Regina M. Pitaro
     Joseph J. Frazzitta
     F. William Scholz, II

Officers:
     
     Mario J. Gabelli              Chief Investment Officer

     Douglas R. Jamieson           Chief Operating Officer and
                                   Executive Vice President 

     Joseph J. Frazzitta           Vice President and Chief
                                   Financial Officer
  
     James E. McKee                Vice President, General       
                                   Counsel and Secretary

Gabelli Securities, Inc.

Directors:

     Charles C. Baum               See above-Gabelli Funds, Inc.


     Joseph R. Rindler             Managing Director
                                   GAMCO Investors, Inc.
                                   One Corporate Center
                                   Rye, NY  10580

     David M. Perlmutter           Perlmutter & Associates
                                   200 Park Avenue, Suite 4515
                                   New York, N.Y.  10166

     Stephen G. Bondi              Acting Chief Operating Officer
                                   and Vice President


Advisors:

     Vincent J. Amabile
     Robert Blake

Officers:

     Stephen G. Bondi              Acting Chief Operating Officer
                                   and Vice President

     Joseph J. Frazzitta           Vice President - Finance

     James E. McKee                Secretary


Gabelli & Company, Inc.

Directors:

     James G. Webster, III         Chairman 

     Joseph J. Frazzitta           Vice President and
                                   Chief Financial Officer

Officers:

     James G. Webster, III         Chairman 

     Joseph J. Frazzitta           Vice President-Finance and
                                   Chief Financial Officer

     Stephen G. Bondi              Vice President 

     Walter K. Walsh               Compliance Officer

     James E. McKee                Secretary


GLI, Inc.

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

Officers:

     Mario J. Gabelli              Chairman and Chief Investment
                                   Officer

     Stephen G. Bondi              Vice President

Gabelli Associates Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British        
                                   WestIndies

     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British             
                                   WestIndies
     
Officers:

     Mario J. Gabelli              Chief Investment Officer

     Kevin Bromley                 Vice President, Treasurer and
                                   Assistant Secretary

     Sandra Wight                  Secretary and Assistant Treasurer


Gabelli International Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.
   
     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British West Indies

Officers:

     Kevin Bromley                 Vice President, Treasurer, and      
                                   Assistant Secretary                 
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies

     Sandra Wight                  Secretary and Assistant Treasurer
                                   Assistant Secretary                 
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies

Lynch Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Paul J. Evanson               President               
                                   Florida Light & Power Co.
                                   P.O Box 14000
                                   700 Universe Blvd.
                                   Juno Beach, Fl 33408

     Bradley J. Bell               Vice President & Treasurer
                                   Whirlpool Corp.
                                   2000 M. 63 North
                                   Administrative Center
                                   Benton Harbor, MI  49022

     Morris Berkowitz              Business Consultant
                                   163-43 Willets Point Blvd.
                                   Whitestone, NY 11357

     Richard J. Boyle              Chairman, The Boyle Group
                                   6110 Blue Circle Drive  
                                   Suite 250 
                                   Minnetonka, MN 55343

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

     Paul Woolard                  Business Consultant
                                   116 East 68th Street
                                   New York, NY 10021

     E. Val Cerutti                Business Consultant          
                                   Cerutti Consultants 
                                   227 McLain Street
                                   Mount Kisco, NY   10549

     Ralph R. Papitto              Chairman of the Board
                                   AFC Cable Systems, Inc.
                                   50 Kennedy Plaza
                                   Suite 1250
                                   Providence, RI  02903

Officers:

     Mario J. Gabelli              Chairman and Chief Executive   
                                   Officer

     Joseph H. Epel                Treasurer

     Robert E. Dolan               Chief Financial Officer 

     Carmine Ceraolo               Assistant Controller

     Robert A. Hurwich             Vice President-Administration,
                                   Secretary and General Counsel

Spinnaker Industries, Inc.
600 N. Pearl Street 
Suite 2160
Dallas, TX  75201

Directors:

     Joseph P. Rhein               5003 Central Avenue     
                                   Ocean City, NJ  08226
                                   
     Richard J. Boyle              The Boyle Group, Inc.             
                                   6110 Blue Circle Drive
                                   Suite 250           
                                   Minnetonka, MN  55343

     Ned N. Fleming, III           Boyle, Fleming, 
                                   George & Co., Inc.            
                                   600 N. Pearl Street
                                   Suite 2160
                                   Dallas, TX  75201

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

Officers:

     James W. Toman                Controller          

     Ned N. Fleming, III           President

     Richard J. Boyle              Chairman and
                                   Chief Executive Officer

     Robert A. Hurwich             Secretary

     Mark A. Matteson              Vice President, Corporate
                                   Development

Entoleter, Inc.
251 Welton Street
Hamden, CT  06517

Directors:

     Ned N. Fleming, III           See above-Spinnaker

     Mark A. Matteson              See above-Spinnaker

     James W. Toman                See above-Spinnaker

     Robert P. Wentzel             See above Entoleter

     James Fleming                 230 Saugatuck Avenue, Unit 8
                                   Westport, CT  06880

Officers:

     James W. Toman                Chief Financial Officer
                                   and Secretary

     Robert P. Wentzel             President

     Anthony R. Massaro            Vice President-Manufacturing


Western New Mexico Telephone Company
314 Yankee Street
Silver City, NM  88062

Directors:

     Jack C. Keen                  Chairman

     Jack W. Keen                  President

     Dr. Brian E. Gordon           Vice President

     Mary Beth Baxter              Secretary & Treasurer

     Robert E. Dolan               See above-Lynch Corporation

     Robert A. Hurwich             See above-Lynch Corporation

     Carmine Ceraolo               See above-Lynch Corporation

Officers:

     Jack C. Keen                  Chairman of the Board

     Jack W. Keen                  President

     Jack L. Bentley               Executive Vice President

     Dr. Brian E. Gordon           Vice President

     Charles M. Baxter             Sr. Vice President-Operations
     
     Mary Beth Baxter              Secretary & Treasurer

     Robert A. Hurwich             Assistant Treasurer


Inter-Community Telephone Company
P.O. Box A
Nome, ND  58062

Directors:

     Mary J. Carroll               See above-Lynch Corporation

     Carmine P. Ceraolo            See above-Lynch Corporation
                                   
     Robert E. Dolan               See above-Lynch Corporation

     Joseph H. Epel                See above-Lynch Corporation

     Robert A. Hurwich             See above-Lynch Corporation

     Leone A. Nilsen               President

     Roger J. Nilsen               P.O. Box 146
                                   Hannaford, ND 58448

     Duane A. Plecity              Secretary

     Harry B. Snyder               P.O. Box 131
                                   Buffalo, ND  58011
                                   
     Robert Snyder                 200 Broadway South
                                   Buffalo, ND  58011

Officers:

     Leone A. Nilsen               President
     
     Robert Snyder                 Vice President 
     
     Duane A. Plecity              Secretary
     
     Harry B. Snyder               Treasurer

     Joseph H. Epel                Assistant Treasurer

     Robert A. Hurwich             Assistant Secretary


Lynch Telecommunications Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Richard A. Kiesling           2801 International Lane
                                   Suite 207
                                   Madison, WI  53740           

     Jack C. Keen                  See above-Western New Mexico
                                   Telephone Company

     Robert A. Snyder              See above-Inter-Community
                                   Telephone Company

Officers:

     Robert A. Hurwich             Secretary

     Mary Beth Baxter              Treasurer and 
                                   Assistant Secretary

     Robert E. Dolan               Controller


Lynch Telephone Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Robert E. Dolan               Controller

     Jack C. Keen                  Chairman

Officers:

     Jack C. Keen                  Chairman

     Jack W. Keen                  President

     Robert A. Hurwich             Secretary

     Mary Beth Baxter              Treasurer and 
                                   Assistant Secretary

     Robert E. Dolan               Controller


     




                             SCHEDULE II                          
                     INFORMATION WITH RESPECT TO                  
           TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR    
              SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)    
                                                                  
                                        SHARES 
                                        PURCHASED        AVERAGE  
                        DATE            SOLD(-)          PRICE(2) 
                                                                  
COMMON STOCK-IDEX CORP                                            
GABELLI FUNDS, INC.                                               
          THE GABELLI EQUITY TRUST,INC.                           
                    10/20/95            1,100-           38.6136  
                    10/16/95            7,000-           38.4643  
                    10/11/95              800-           38.0000  
                     9/22/95            2,200-           40.6932  
                                                                  
GAMCO INVESTORS, INC.                                             
                    11/08/95            4,500-           37.6111  
                    11/07/95            2,700-           37.5787  
                    11/03/95            1,900-           37.5000  
                    11/01/95            1,100-           37.6250  
                    10/31/95            5,100-           37.5392  
                    10/27/95              500-           37.0000  
                    10/26/95            1,400-           37.4643  
                    10/26/95            1,000-           37.6250  
                    10/24/95            1,100-           37.9545  
                    10/24/95              200-           38.2500  
                    10/23/95            1,200-           38.4792  
                    10/20/95            2,250-           38.6667  
                    10/19/95            3,000-             *DO    
                    10/17/95            2,250-           38.2611  
                    10/13/95            3,000-             *DO    
                    10/11/95            1,250-           37.3750  
                    10/10/95            2,500-           37.8750  
                    10/06/95              500-           38.5000  
                    10/05/95            1,500-           37.8750  
                     9/28/95            1,500-             *DO    
                     9/25/95              500-           39.7500  
                     9/25/95            2,250-           40.1528  
                     9/20/95              500-           40.5750  
                     9/18/95              250-           39.6250  
                     9/15/95            1,100-           39.5682  
                     9/14/95              450-             *DO    
                     9/14/95              400-           39.7500  
                     9/13/95              250-             *DO    
                                                                  
(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED    
    ON THE NY STOCK EXCHANGE.                                     
(2) PRICE EXCLUDES COMMISSION.                                    
(*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP 
    OF GAMCO INVESTORS, INC.                                      
                                                                  
                                                  PAGE 26 OF 26