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                                                                     EXHIBIT 4.8

                         REGISTRATION RIGHTS AGREEMENT



     THIS REGISTRATION RIGHTS AGREEMENT, dated July 29, 1996, is between IDEX
CORPORATION, a Delaware corporation with its principal place of business at 630
Dundee Road, Suite 400, Northbrook, Illinois 60062 ("IDEX") and MITCHELL H.
SARANOW, an individual residing at 860 Auburn Road, Winnetka, Illinois 60093
(the "Holder").

                                   RECITALS:

     A. IDEX, FMI Management Company, an Illinois corporation and wholly-owned
subsidiary of IDEX, the Holder and The Saranow Company entered into an
Agreement and Plan of Merger dated July 26, 1996 (the "Merger Agreement"),
pursuant to which FMI Management Company has merged with and into The Saranow
Company and IDEX has delivered to the Holder 75,700 shares of Common Stock of
IDEX (the "IDEX Shares").

     B. It is a covenant of the Merger Agreement that the IDEX Shares delivered
to the Holder be registered for sale by IDEX under the Securities Act of 1933
(the "Act").

     NOW, THEREFORE, in consideration of the mutual covenants and promises
contained in this Agreement and in the Merger Agreement, and for other good and
valuable consideration, the receipt and adequacy of which are hereby
acknowledged, IDEX and the Holder hereby agree as follows:

     1. Transfer Restrictions.  The Holder acknowledges that the IDEX Shares
have not been registered under the Act or any applicable state securities laws
and the Holder agrees not to sell, pledge, hypothecate, transfer or otherwise
dispose of (collectively "Transfer") any of the IDEX Shares unless such shares
are first registered under the Act or such Transfer is exempt from registration
and IDEX is furnished evidence reasonably satisfactory to it of such exemption.
  
     2. Mandatory Registration.  Within ninety (90) days following the date of
this Agreement, IDEX shall use its best efforts to file with the Securities and
Exchange Commission (the "Commission") a registration statement (the
"Registration Statement") under the Act on an appropriate form to register all
of the IDEX Shares for sale under the Act.  Except as otherwise provided in
this Agreement, IDEX shall use its best efforts to have the Registration
Statement declared effective by the SEC as soon as practicable after it is
filed; provided, however, that the effective date may be delayed with the
consent of the Holder, which consent may not be unreasonably withheld.  IDEX
shall maintain the effectiveness of the Registration Statement until first
to occur of (a) the sale by the Holder of 



        
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all IDEX Shares, (b) the second anniversary of this Agreement or (c) the
expiration of such lesser holding period provided in Rule 144, if such rule is
amended, at which time IDEX shall have the right to de-register the IDEX
Shares.  Upon notification to the Holder that the Registration Statement is not
effective or otherwise may not be used for resale by the Holder (a "Notice of
Ineffectiveness"), the Holder shall be prohibited from selling the IDEX Shares
pursuant to the Registration Statement until IDEX has provided notification to
the Holder that the Registration Statement is again available for use by the
Holder, which notification shall be provided as soon as the Registration
Statement is again available for use.  IDEX shall use all reasonable efforts to
maintain the effectiveness of the Registration Statement and to minimize any
period during which the Holder may not use the Registration Statement.

     3. Cooperation with IDEX.  The Holder shall cooperate with IDEX in all
reasonable respects in connection with this Agreement, including timely
supplying all information reasonably requested by IDEX and executing and
returning all documents reasonably requested by IDEX in connection with the
registration and sale of the IDEX Shares.

     4. Registration Procedures.  In connection with the registration of the
IDEX Shares under the Act, IDEX shall (except as otherwise provided in this
Agreement), as expeditiously as possible:

        (a) prepare and file with the Commission such amendments and 
supplements to  the Registration Statement and the prospectus used in
connection therewith as may be necessary to keep the Registration Statement
effective and to comply with the provisions of the Act with respect to the sale
or other disposition of all securities covered by the Registration Statement;

        (b) furnish to the Holder such copies of a prospectus, including a
preliminary prospectus or any amendment or supplement to any prospectus, in
conformity with the requirements of the Act, and such other documents, as the
Holder may reasonably request in order to facilitate the public sale or other
disposition of the IDEX Shares;

        (c) use its best efforts to register and qualify the securities 
covered by the Registration Statement under such other securities or blue
sky laws of such jurisdictions as the Holder shall reasonably request, and do
any and all other acts and things which may be necessary or advisable to enable
the Holder to consummate the public sale or other disposition of the IDEX
Shares in such jurisdictions, except that IDEX shall not for any such purpose
be required to qualify to do business as a foreign corporation in any
jurisdiction wherein it is not so qualified or to file therein any general
consent to service of process;


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        (d) use its best efforts to list such securities on any securities
exchange on which any securities of IDEX are then listed; and

        (e) notify the Holder at any time when a prospectus relating thereto
covered by such Registration Statement is required to be delivered under the
Act, of the happening of any event of which it has knowledge as a result of
which the prospectus included in such Registration Statement, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing.

     5. Expenses.  All expenses incurred in any registration of the IDEX Shares
under this Agreement shall be paid by IDEX including, without limitation,
printing expenses, fees and disbursements of counsel for IDEX, expenses of any
audits to which IDEX shall agree or which shall be necessary to comply with
governmental requirements in connection with any such registration, all
registration and filing fees for the IDEX Shares under federal and state
securities laws, and expenses of complying with the securities or blue sky laws
of any jurisdictions; provided, however, that IDEX shall not be liable for (a)
any discounts or commissions to any underwriter (unless such discounts and
commissions are payable by reason of IDEX's desire to include the IDEX Shares
in an underwritten public offering that includes shares being sold for the
account of IDEX); (b) any stock transfer taxes incurred with respect to the
IDEX Shares sold in the offering or (c) the fees and expenses of counsel for
the Holder.

     6. Indemnification.

        (a) Company Indemnity.  Without limitation of any other indemnity 
provided to the Holder, to the fullest extent permitted by law, IDEX
shall indemnify and hold harmless the Holder, its affiliates, its counsel,
officers, directors, shareholders and representatives, any underwriter (as
defined in the Act) for the Holder, and each person, if any, who controls the
Holder or any such underwriter (within the meaning of the Act or the Securities
Exchange Act of 1934 (the "Exchange Act")), against any losses, claims, damages
or liabilities (joint or several) to which they may become subject under the
Act, the Exchange Act or any other federal or state law, and IDEX shall
reimburse the Holder, its affiliates, counsel, officers, directors,
shareholders and underwriters, and controlling persons thereof, for any legal
or other expenses incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise
out of or are based upon any of the following (each a "Violation"):  (i) any
untrue statement or alleged untrue statement of a material fact contained in
the Registration Statement, including any preliminary prospectus or final
prospectus contained therein or any amendments or supplements thereto or (ii)
the omission or alleged omission to state therein a material fact required to
be stated therein or necessary to make the statements therein not misleading;
provided, however, that IDEX shall 


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not be liable to the Holder in any such case for any such loss, claim,
damage, liability or action to the extent that it arises out of or is based
upon a Violation which occurs in reliance upon and in conformity with written
information furnished expressly for use in connection with such registration by
the Holder, its affiliates, counsel, officers, directors, shareholders or
representatives, or any controlling person thereof.

         (b) Holder Indemnity.  Without limitation of any other indemnity
provided to IDEX, to the fullest extent permitted by law, the Holder shall
indemnify and  hold harmless IDEX, its affiliates, its counsel, officers,
directors, shareholders and representatives, any underwriter (as defined in the
Act) for IDEX, and each person, if any, who controls IDEX or any such
underwriter (within the meaning of the Act or the Exchange Act), against any 
losses, claims, damages or liabilities (joint or several) to which they may
become subject under the Act, the Exchange Act or any other federal or state
law, and the Holder shall reimburse IDEX, its affiliates, counsel, officers,
directors, shareholders and underwriters, and controlling persons thereof, for
any legal or other expenses incurred by them in connection with investigating
or defending any such loss, claim, damage, liability or action, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise
out of or are based upon any of the following:  (i) any untrue statement or
alleged untrue statement of a material fact in the Registration Statement,
including any preliminary prospectus or final prospectus contained therein or
in any amendments or supplements thereto, to the extent provided by the Holder
to IDEX in writing expressly for use in connection with the registration of the
IDEX Shares or (ii) the omission or alleged omission to state a material fact
required to be stated therein or necessary to make the statements so provided
therein not misleading.

        (c) Notice; Right to Defend.  Promptly after receipt by an indemnified
party under this Section of notice of the commencement of any action (including
any governmental action) such indemnified party shall, if a claim in respect
thereof is to be made against any indemnifying party under this Section deliver
to the indemnifying party a written notice of commencement thereof and the
indemnifying party shall have the right to participate in and if the
indemnifying party agrees in writing that it will be responsible for any costs,
expenses, judgments, damages and losses incurred by the indemnified party with
respect to such claim, to assume the defense thereof with counsel mutually
satisfactory to the parties; provided, however, that an indemnified party shall
have the right to retain its own counsel in any such case, but the fees and
expenses of such counsel shall be at the expense of such indemnified party
unless (i) the employment of such counsel shall have been authorized in writing
by the indemnifying party in connection with the defense of such action, (ii)
the indemnifying party shall not have employed counsel reasonably satisfactory
to such indemnified party to have charge of the defense of such action within a
reasonable time after notice of the commencement of the action, or (iii) such
indemnified party shall have been advised by counsel that there may be defenses
available to it which are different from or additional to those available
to the indemnifying party, in any of which events such fees and 


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expenses of additional counsel shall be borne by the indemnifying party. 
The failure to deliver written notice to the indemnifying party within a
reasonable time of the commencement of any such action shall relieve such
indemnifying party of any liability to the indemnified party under this
Agreement only if and to the extent that such failure is prejudicial to its
ability to defend such action, and the omission so to deliver written notice to
the indemnifying party will not relieve it of any liability that it may have to
any indemnified party otherwise than under this Agreement.

         (d) Contribution.  If the indemnification provided for in this
Agreement is held by a court of competent jurisdiction to be unavailable to an
indemnified party with respect to any loss, liability, claim, damage or expense
referred to therein, then the indemnifying party, in lieu of indemnifying such
indemnified party thereunder, shall contribute to the amount paid or payable by
such indemnified party as a result of such loss, liability, claim, damage or
expense in such proportion as is appropriate to reflect the relevant fault of
the indemnifying party on the one hand and indemnified party on the other hand
in connection with the statements or omissions which resulted in such loss,
liability, claim, damage or expense as well as any other relevant equitable
considerations.  The relevant fault of the indemnifying party and the
indemnified party shall be determined by reference to, among other things, 
whether the untrue or alleged untrue statement of a material fact or the
omission to state a material fact relates to information supplied by the
indemnifying party or by the indemnified party and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission.  Notwithstanding the foregoing, the amount the
Holder shall be obligated to contribute pursuant to the Agreement shall be
limited to an amount equal to the proceeds to the Holder of the IDEX Shares
sold pursuant to the registration statement which gives rise to such obligation
to contribute (less the aggregate amount of any damages which the Holder has
otherwise been required to pay in respect of such loss, claim, damage,
liability or action or any substantially similar loss, claim, damage, liability
or action arising from the sale of the IDEX Shares).

     7. Survival of Indemnity.  The indemnification provided by this Agreement
shall be a continuing right to indemnification and shall survive the
registration and sale of the IDEX Shares by any person entitled to
indemnification hereunder and the expiration or termination of this Agreement.

     8. Notices.  Unless otherwise provided in this Agreement, any notice,
request, instruction or other communication to be given hereunder by any party
to the other shall be in writing and (a) delivered personally, (b) mailed by
certified mail, postage prepaid (such mailed notice to be effective four days
after the date it is mailed) or (c) sent by facsimile transmission, with a
confirmation sent by way of one of the above methods, as follows:



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     If to the Holder addressed to:


                        Mitchell H. Saranow
                        860 Auburn Road
                        Winnetka, Illinois 60093
                        Telephone:  (847) 501-3045
                        Telecopier: (847) 501-3049

     With a copy to:

                       Sidley & Austin
                       One First National Plaza
                       Suite 4000
                       Chicago, Illinois 60603
                       Attn:  John J. Sabl, Esq.
                              Steven Sutherland, Esq.
                       Telephone:(312) 853-7567
                       Telecopier:(312) 853-7036

     If to IDEX, addressed to:

                       IDEX Corporation
                       630 Dundee Road, Suite 400
                       Northbrook, Illinois 60062
                       Attn:  Donald N. Boyce
                              Wayne P. Sayatovic
                       Telephone:   (847) 498-7070
                       Telecopier:  (847) 498-9123

     With a copy to:

                       Hodgson, Russ, Andrews, Woods & Goodyear
                       Attn: Richard E. Heath, Esq.
                             David V.L. Bradley, Esq.
                             Frank J. Notaro, Esq.

                       1800 One M & T Plaza
                       Buffalo, New York 14203
                       Telephone:  (716) 856-4000
                       Telecopier: (716) 849-0349



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     and:
          
          Latham & Watkins
          Attn:  Mark Stegemoeller
          Sears Tower, Suite 5800
          Chicago, Illinois 60606
          Telephone:   (312) 876-7700
          Telecopier:  (312) 993-9767

Any party may designate in a writing to any other party any other address or
telecopier number to which, and any other Person to whom or which, a copy of
any such notice, request, instruction or other communication should be sent.

     9. Successors and Assigns.  Except as otherwise expressly provided herein,
this Agreement shall inure to the benefit of and be binding upon the successors
and permitted assigns of IDEX and the Holder.  The Holder shall have the right
to assign to any permitted transferee of the IDEX Shares his rights under this
Agreement.

    10. Amendment and Waiver.  This Agreement may be amended, and the
observance of any term of this Agreement may be waived, but only with the
written consent of IDEX and the Holder.  No delay on the part of any party in
the exercise of any right, power or remedy shall operate as a waiver thereof,
nor shall any single or partial exercise by any party of any right, power or
remedy preclude any other or further exercise thereof, or the exercise of any
other rights, power or remedy.

    11. Counterparts. One or more counterparts of this Agreement may be signed
by the parties, each of which shall be an original but all of which together
shall constitute one and same instrument.

    12. Governing Law.  This Agreement shall be construed in accordance with
and governed by the internal laws of the State of Illinois, without giving
effect to conflicts of law principles.

    13. Invalidity of Provisions.  If any provision of this Agreement is or
becomes invalid, illegal or unenforceable in any respect, the validity,
legality and enforceability of the remaining provisions contained herein shall
not be affected thereby.

    14. Headings. The headings in this Agreement are for convenience of
reference only and shall not be deemed to alter or affect the meaning or
interpretation of any provisions hereof.


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     IN WITNESS WHEREOF, the undersigned has executed this Agreement as of the
date first above written.


                             IDEX CORPORATION


                             By /S/ Wayne P. Sayatovic
                               ----------------------------
                                   Wayne P. Sayatovic
                                   Vice President



                             /S/   Mitchell H. Saranow
                             ------------------------------
                                   Mitchell H. Saranow