BADGER METER INC
8-A12B, 1998-05-26
TOTALIZING FLUID METERS & COUNTING DEVICES
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<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549
                            -------------------------

                                    FORM 8-A

                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


                               Badger Meter, Inc.
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


       Wisconsin                                           39-0143280
       ---------                                           ----------
(State of incorporation                                  (IRS Employer
   or organization)                                    Identification No.)



  4545 West Brown Deer Road, Milwaukee, Wisconsin             53223
  -----------------------------------------------             -----
       (Address of principal executive offices)             (Zip Code)


Securities to be registered pursuant to Section 12(b) of the Act:


      Title of each class                 Name of each exchange on which each
      to be so registered                    class is to be registered
      -------------------                    -------------------------
  Common Share Purchase Rights                American Stock Exchange

         If this Form relates to the registration of a class of securities
pursuant to Section 12(b) of the Exchange Act and is effective pursuant to
General Instruction A.(c), please check the following box. [X]

         If this Form relates to the registration of a class of securities
pursuant to Section 12(g) of the Exchange Act and is effective pursuant to
General Instruction A.(d), please check the following box.[ ]


Securities to be registered pursuant to Section 12(g) of the Act:

                                      None
                          ----------------------------      
                                (Title of Class)


<PAGE>   2







Item 1.  Description of Securities to be Registered.

                  On May 15, 1998, the Board of Directors of Badger Meter, Inc.
(the "Company") declared a dividend of one common share purchase right (a
"Right") for each outstanding share of common stock, $1.00 par value, of the
Company (the "Common Shares"). The dividend is payable on June 15, 1998 to the
shareholders of record on June 1, 1998 (the "Record Date"). Each Right entitles
the registered holder to purchase from the Company one Common Share at a price
of $140.00 per Common Share, subject to adjustment (the "Purchase Price"). The
description and terms of the Rights are set forth in a Rights Agreement dated
May 26, 1998 (the "Rights Agreement"), between the Company and Firstar Trust
Company, as Rights Agent (the "Rights Agent").

                  Until the earlier to occur of (i) 10 days following a public
announcement that a person or group of affiliated or associated persons (other
than the Company, a subsidiary of the Company, an employee benefit plan of the
Company or a subsidiary or a trustee thereof, or the voting trust created by the
Badger Meter Voting Trust Agreement dated as of June 1, 1953, as amended, the
voting trust created by the Badger Meter Officers Voting Trust Agreement dated
as of December 18, 1991, as amended, or any trustee of such voting trusts (the
"Voting Trusts and Trustees")) (an "Acquiring Person") has acquired beneficial
ownership of 20% or more of the outstanding Common Shares (the "Shares
Acquisition Date") or (ii) 10 business days (or such later date as may be
determined by action of the Company's Board of Directors prior to such time as
any person becomes an Acquiring Person) following the commencement of, or
announcement of an intention to make, a tender offer or exchange offer the
consummation of which would result in the beneficial ownership by a person or
group (other than the Company, a subsidiary of the Company, an employee benefit
plan of the Company or a subsidiary or the Voting Trusts and Trustees) of 20% or
more of such outstanding Common Shares (the earlier of such dates being called
the "Distribution Date"), the Rights will be evidenced, with respect to any of
the Common Share certificates outstanding as of the Record Date, by such Common
Share certificate.

                  The Rights Agreement provides that, until the Distribution
Date, the Rights will be transferred with and only with the Common Shares. Until
the Distribution Date (or earlier redemption or expiration of the Rights), new
Common Share certificates issued after the Record Date, upon transfer or new
issuance of Common Shares, will contain a notation incorporating the Rights
Agreement by reference. Until the Distribution Date (or earlier redemption or
expiration of the Rights), the surrender for transfer of any certificates for
Common Shares, outstanding as of the Record Date, even without such notation,
will also constitute the transfer of the Rights associated with the Common
Shares represented by such certificate. As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.

                  The Rights are not exercisable until the Distribution Date.
The Rights will expire on May 26, 2008 (the "Final Expiration Date"), unless the
Rights are earlier redeemed or exchanged by the Company, or the Rights Plan is
amended, in each case as described below.

                  The Purchase Price payable, and the number of Common Shares or
other securities or property issuable, upon exercise of the Rights are subject
to adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Common
Shares; (ii) upon the grant to holders of the Common Shares of certain rights or
warrants to 

                                      -2-

<PAGE>   3

subscribe for or purchase Common Shares at a price, or securities convertible
into Common Shares with a conversion price, less than the then current market
price of the Common Shares; or (iii) upon the distribution to holders of the
Common Shares of evidences of indebtedness or assets (excluding regular
quarterly cash dividends or dividends payable in Common Shares) or of
subscription rights or warrants (other than those referred to above).

                  The number of outstanding Rights and the number of Common
Shares issuable upon exercise of each Right are also subject to adjustment in
the event of a stock split of the Common Shares or a stock dividend on the
Common Shares payable in Common Shares or subdivisions, consolidations or
combinations of the Common Shares occurring, in any such case, prior to the
Distribution Date.

                  In the event that any person becomes an Acquiring Person (a
"Flip-In Event"), each holder of a Right will thereafter generally have the
right to receive upon exercise that number of Common Shares (or, in certain
circumstances cash, property or other securities of the Company or a reduction
in the Purchase Price) having a market value of two times the then current
Purchase Price. Notwithstanding any of the foregoing, following the occurrence
of a Flip-In Event all Rights that are, or (under certain circumstances
specified in the Rights Agreement) were, or subsequently become beneficially
owned by an Acquiring Person, related persons and transferees will be null and
void.

                  In the event that, at any time following the Shares
Acquisition Date, (i) the Company is acquired in a merger or other business
combination transaction or (ii) 50% or more of its consolidated assets or
earning power are sold (the events described in clauses (i) and (ii) are herein
referred to as "Flip-Over Events"), proper provision will be made so that each
holder of a Right will (subject to the limitations set forth in the Rights
Agreement) thereafter have the right to receive, upon the exercise thereof at
the then current Purchase Price, that number of shares of common stock of the
acquiring company which at the time of such transaction will have a market value
of two times the then current Purchase Price.

                  With certain exceptions, no adjustment in the Purchase Price
will be required until cumulative adjustments require an adjustment of at least
1% in such Purchase Price. No fractional Common Shares will be issued. In lieu
thereof, an adjustment in cash will be made based on the market price of the
Common Shares on the last trading day prior to the date of exercise.

                  The Purchase Price is payable by certified check, cashier's
check, bank draft or money order or, if so provided by the Company, the Purchase
Price following the occurrence of a Flip-In Event and until the first occurrence
of a Flip-Over Event may be paid in Common Shares having an equivalent value.

                  At any time after a person becomes an Acquiring Person and
prior to the acquisition by any Acquiring Person of 50% or more of the
outstanding Common Shares, the Board of Directors of the Company may exchange
the Rights (other than Rights owned by any Acquiring Person which have become
void), in whole or in part, at an exchange ratio of one Common Share per Right
(subject to adjustment).

                  At any time prior to a person becoming an Acquiring Person,
the Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $.01 per Right (the "Redemption Price"). The redemption of
the Rights may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.
Immediately upon 


                                      -3-
<PAGE>   4

any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

                  Other than provisions relating to certain of the principal
economic terms of the Rights, the terms of the Rights may be amended by the
Board of Directors of the Company without the consent of the holders of the
Rights, including an amendment to lower the threshold for exercisability of the
Rights from 20% to not less than 10%, with appropriate exceptions for any person
then beneficially owning a percentage of the number of Common Shares then
outstanding equal to or in excess of the new threshold, except that from and
after the Distribution Date no such amendment may adversely affect the interests
of the holders of the Rights.

                  Until a Right is exercised, the holder thereof, as such, will
have no rights as a shareholder of the Company, including, without limitation,
the right to vote or to receive dividends.

                  As of May 20, 1998, there were 3,316,028 Common Shares issued
and outstanding (and 1,8434,028 Common Shares reserved for issuance, including
the Common Shares reserved for issuance upon conversion of the Class B Common
Stock, $.10 par value, of the Company (the "Class B Common Stock")). Each
outstanding Common Share on the Record Date will receive one Right. As long as
the Rights are attached to the Common Shares, the Company will issue one Right
for each Common Share which becomes outstanding between the Record Date and the
Distribution Date so that all such shares will have attached Rights.

                  The Rights have certain anti-takeover effects. The Rights will
cause substantial dilution to a person or group that attempts to acquire the
Company without conditioning the offer on redemption of the Rights or on a
substantial number of Rights being acquired. The Rights should not interfere
with any merger or other business combination approved by the Board of Directors
of the Company prior to the time that the Rights may not be redeemed (as
described above) since the Board of Directors may, at its option, at any time
until the Shares Acquisition Date redeem all but not less than all the then
outstanding Rights at $.01 per Right. In addition to the Company's current two
class capital structure, with holders of shares of Class B Common Stock having
ten votes per share in contrast to the one vote per share available to holders
of Common Shares, the Rights are designed to provide additional protection
against abusive takeover tactics such as offers for all shares at less than full
value or at an inappropriate time (in terms of maximizing long-term shareholder
value), partial tender offers and selective open-market purchases. The Rights
are intended to assure that the Company's Board of Directors has the ability to
protect shareholders and the Company if efforts are made to gain control of the
Company in a manner that is not in the best interests of the Company and its
shareholders.

                  The Rights Agreement between the Company and the Rights Agent
specifying the terms of the Rights, which includes as Exhibit A the Form of
Right Certificate, is attached hereto as an exhibit. The foregoing description
of the Rights does not purport to be complete and is qualified in its entirety
by reference to such exhibit.


                                      -4-

<PAGE>   5



Item 2.  Exhibits.

         (4.1)    Rights Agreement, dated as of May 26, 1998, between Badger
                  Meter, Inc. and Firstar Trust Company, which includes as
                  Exhibit A thereto the Form of Right Certificate and as Exhibit
                  B thereto the Summary of Rights to Purchase Common Shares.

                                      -5-

<PAGE>   6


                                    SIGNATURE

                  Pursuant to the requirements of Section 12 of the Securities
Exchange Act of 1934, the registrant has duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly authorized.


                                      BADGER METER, INC.



Date:  May 26, 1998                   By:  /s/ James L. Forbes
                                           ---------------------
                                           James L. Forbes
                                           President and Chief Executive Officer


                                      -6-
<PAGE>   7



                               BADGER METER, INC.
                                    FORM 8-A
                                  EXHIBIT INDEX



      Exhibit                            Description
      Number                             -----------  
     --------                                
      (4.1)         Rights Agreement, dated as of May 26, 1998, between Badger
                    Meter, Inc. and Firstar Trust Company, which includes as
                    Exhibit A thereto the Form of Right Certificate and as
                    Exhibit B thereto the Summary of Rights to Purchase Common
                    Shares.



                                      -7-

<PAGE>   1



                               BADGER METER, INC.


                                       and


                              FIRSTAR TRUST COMPANY

                                  Rights Agent

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

                                RIGHTS AGREEMENT

                            Dated as of May 26, 1998


<PAGE>   2

                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                               PAGE

<S>               <C>                                                                                            <C>
Section 1.        Certain Definitions  .........................................................................  1

Section 2.        Appointment of Rights Agent...................................................................  4

Section 3.        Issue of Right Certificates...................................................................  4

Section 4.        Form of Right Certificates....................................................................  6

Section 5.        Countersignature and Registration.............................................................  6

Section 6.        Transfer,  Split  Up,  Combination  and  Exchange  of  Right  Certificates;   Mutilated,
                  Destroyed, Lost or Stolen Right Certificates..................................................  6

Section 7.        Exercise of Rights; Purchase Price; Expiration Date of Rights.................................  7

Section 8.        Cancellation and Destruction of Right Certificates............................................  8

Section 9.        Reservation and Availability of Common Shares.................................................  9

Section 10.       Record Holders of Common Shares Issued Upon Exercise of Rights................................  9

Section 11.       Adjustment of Purchase Price, Number of Shares or Number of Rights............................ 10

Section 12.       Certificate of Adjusted Purchase Price or Number of Shares.................................... 17

Section 13.       Consolidation, Merger, Share Exchange or Sale or Transfer of Assets or Earning Power.......... 17

Section 14.       Fractional Rights and Fractional Shares....................................................... 19

Section 15.       Rights of Action.............................................................................. 20

Section 16.       Agreement of Right Holders.................................................................... 21

Section 17.       Right Certificate Holder Not Deemed a Shareholder............................................. 21

Section 18.       Concerning the Rights Agent................................................................... 21

Section 19.       Merger or Consolidation or Change of Name of Rights Agent..................................... 22
</TABLE>

                                      (i)

<PAGE>   3

<TABLE>
<CAPTION>        
                                                                                                                PAGE

<S>               <C>                                                                                           <C>   
Section 20.       Duties of Rights Agent........................................................................ 22

Section 21.       Change of Rights Agent........................................................................ 25

Section 22.       Issuance of New Right Certificates............................................................ 25

Section 23.       Redemption.................................................................................... 26

Section 24.       Exchange...................................................................................... 26

Section 25.       Notice of Certain Events...................................................................... 27

Section 26.       Notices....................................................................................... 28

Section 27.       Supplements and Amendments.................................................................... 29

Section 28.       Successors.................................................................................... 30

Section 29.       Determinations by the Board of Directors...................................................... 30

Section 30.       Benefits of this Agreement.................................................................... 30

Section 31.       Severability.................................................................................. 30

Section 32.       Governing Law................................................................................. 30

Section 33.       Counterparts.................................................................................. 30

Section 34.       Descriptive Headings.......................................................................... 31


Exhibit A - Form of Right Certificate

Exhibit B - Summary of Rights to Purchase Common Shares
</TABLE>


                                      (ii)

<PAGE>   4


                                RIGHTS AGREEMENT

                  THIS AGREEMENT, dated as of May 26, 1998, between BADGER
METER, INC., a Wisconsin corporation (the "Company"), and FIRSTAR TRUST COMPANY,
a Wisconsin banking corporation (the "Rights Agent").

                  WHEREAS, the Board of Directors of the Company has authorized
and declared a dividend of one common share purchase right (a "Right") for each
Common Share (as hereinafter defined) of the Company outstanding on June 1, 1998
(the "Record Date") payable on June 15, 1998 (the "Payment Date"), and has
authorized and directed the issuance of one Right with respect to each Common
Share that shall become outstanding between the Record Date and the earliest of
the Distribution Date, the Redemption Date and the Final Expiration Date (as
such terms are hereinafter defined), each Right representing the right to
purchase one Common Share (as hereinafter defined) of the Company upon the terms
and subject to the conditions hereinafter set forth;

                  NOW, THEREFORE, in consideration of the premises and the
mutual agreements herein set forth, the parties hereby agree as follows:


                  SECTION 1. CERTAIN DEFINITIONS. For purposes of this
Agreement, the following terms have the meanings indicated:

                  (a)    "Acquiring Person" shall mean any Person (as such
term is hereinafter defined) who or which, together with all Affiliates and
Associates (as such terms are hereinafter defined) of such Person, shall be the
Beneficial Owner (as such term is hereinafter defined) of 20% or more of the
Common Shares of the Company then outstanding, but shall not include the
Company, any Subsidiary (as such term is hereinafter defined) of the Company,
any employee benefit plan of the Company or any Subsidiary of the Company, any
entity holding Common Shares for or pursuant to the terms of any such plan, or
any trustee, administrator or fiduciary of such a plan or any Exempt Person.
Notwithstanding the foregoing, no Person shall become an "Acquiring Person" as a
result of an acquisition of Common Shares by the Company which, by reducing the
number of shares outstanding, increases the proportionate number of shares
beneficially owned by such Person to 20% or more of the Common Shares of the
Company then outstanding; provided, however, that if a Person would, but for the
foregoing, become an Acquiring Person by reason of share purchases by the
Company and shall, after such share purchases by the Company, become the
Beneficial Owner of any additional Common Shares of the Company at any time that
the Person is or thereby becomes the Beneficial Owner of 20% or more of the
Common Shares of the Company then outstanding (other than Common Shares acquired
solely as a result of corporate action of the Company not caused, directly or
indirectly, by such Person), then such Person shall be deemed to be an
"Acquiring Person".

                  Notwithstanding the foregoing, if the Board of Directors of
the Company determines in good faith that a Person who would otherwise be an
"Acquiring Person", as defined pursuant to the foregoing provisions of this
paragraph (a), has become such inadvertently, and such Person divests as
promptly as practicable a sufficient number of Common Shares so that such Person
would no longer be an "Acquiring Person," as defined 




<PAGE>   5

pursuant to the foregoing provisions of this paragraph (a), then such Person
shall not be deemed to be an "Acquiring Person" for any purposes of this
Agreement.

                  (b)    "Affiliate" and "Associate" shall have the respective
meanings ascribed to such terms in Rule 12b-2 of the General Rules and
Regulations under the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), as in effect on the date of this Agreement.

                  (c) A Person shall be deemed the "Beneficial Owner" of and
shall be deemed to "beneficially own" any securities:

                      (i) which such Person or any of such Person's Affiliates
         or Associates beneficially owns, directly or indirectly;

                      (ii) which such Person or any of such Person's Affiliates
         or Associates has (A) the right to acquire (whether such right is
         exercisable immediately or only after the passage of time) pursuant to
         any agreement, arrangement or understanding (other than customary
         agreements with and between underwriters and selling group members with
         respect to a bona fide public offering of securities), or upon the
         exercise of conversion rights, exchange rights, rights (other than
         these Rights), warrants or options, or otherwise; provided, however,
         that a Person shall not be deemed the Beneficial Owner of, or to
         beneficially own, securities tendered pursuant to a tender or exchange
         offer made by or on behalf of such Person or any of such Person's
         Affiliates or Associates until such tendered securities are accepted
         for purchase or exchange; or (B) the right to vote pursuant to any
         agreement, arrangement or understanding; provided, however, that a
         Person shall not be deemed the Beneficial Owner of, or to beneficially
         own, any security if the agreement, arrangement or understanding to
         vote such security (1) arises solely from a revocable proxy or consent
         given to such Person in response to a public proxy or consent
         solicitation made pursuant to, and in accordance with, the applicable
         rules and regulations of the Exchange Act and (2) is not also then
         reportable on Schedule 13D under the Exchange Act (or any comparable or
         successor report); or

                      (iii) which are beneficially owned, directly or
         indirectly, by any other Person with which such Person or any of such
         Person's Affiliates or Associates has any agreement, arrangement or
         understanding (other than customary agreements with and between
         underwriters and selling group members with respect to a bona fide
         public offering of securities) for the purpose of, or with respect to,
         acquiring, holding, voting (except to the extent contemplated by the
         proviso to Section 1(c)(ii)(B)) or disposing of any securities of the
         Company.

                  Notwithstanding anything in this definition of Beneficial
Ownership to the contrary, the phrase "then outstanding," when used with
reference to a Person's Beneficial Ownership of securities of the Company, shall
mean the number of such securities then issued 


                                      -2-
<PAGE>   6

and outstanding together with the number of such securities not then actually
issued and outstanding which such Person would be deemed to own beneficially
hereunder.

                  (d)    "Business Day" shall mean any day other than a
Saturday, a Sunday or a day on which banking institutions in the State of
Wisconsin are authorized or obligated by law or executive order to close.

                  (e)    "Close of business" on any given date shall mean 5:00
P.M., Milwaukee, Wisconsin time, on such date; provided, however, that if such
date is not a Business Day it shall mean 5:00 P.M., Milwaukee, Wisconsin time,
on the next succeeding Business Day.

                  (f)    "Common Shares" when used with reference to the
Company shall mean the shares of common stock, $1.00 par value, of the Company,
or shares having equivalent rights, privileges and preferences to common stock,
including any shares of common stock, $1.00 par value, issued upon conversion of
the Class B Common Stock, $.10 par value, but not including shares of Class B
Common Stock, $.10 par value, which shall not be considered "Common Shares."
"Common Shares" when used with reference to any Person other than the Company
shall mean the capital stock (or equivalent equity interest) with the greatest
voting power of such other Person or, if such other Person is a Subsidiary of
another Person, the Person or Persons which ultimately control such
first-mentioned Person.

                  (g) "Distribution Date" shall have the meaning set forth in
Section 3(a) hereof.

                  (h) "Exchange Act" means the Securities Exchange Act of 1934,
as amended.

                  (i) "Exchange Ratio" shall have the meaning set forth in
Section 24 hereof.

                  (j) "Exempt Person" shall mean (i) the voting trust created by
the Badger Meter Voting Trust Agreement dated as of June 1, 1953, as amended,
(ii) the voting trust created by the Badger Meter Officers Voting Trust
Agreement dated as of December 18, 1991, as amended, and (iii) any trustee,
administrator or fiduciary of the voting trusts identified in clauses (i) and
(ii) above, in their capacities as such.

                  (k) "Final Expiration Date" shall have the meaning set forth
in Section 7 hereof.

                  (l) "Person" shall mean any individual, firm, corporation or
other entity, and shall include any successor (by merger or otherwise) of such
entity.

                  (m) "Redemption Date" shall have the meaning set forth in
Section 7 hereof.

                  (n) "Shares Acquisition Date" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) under the Exchange
Act) by the Company or an Acquiring Person that an 

                                      -3-
<PAGE>   7

Acquiring Person has become such; provided, that if such Person is determined
not to have become an Acquiring Person pursuant to Section 1(a) hereof, then no
Shares Acquisition Date shall be deemed to have occurred.

                  (o)    "Subsidiary" of any Person shall mean any corporation
or other entity of which a majority of the voting power of the voting equity
securities or equity interest is owned, directly or indirectly, by such Person.

                  SECTION 2. APPOINTMENT OF RIGHTS AGENT. The Company hereby
appoints the Rights Agent to act as agent for the Company and the holders of the
Rights (who, in accordance with Section 3 hereof, shall prior to the
Distribution Date also be the holders of the Common Shares of the Company) in
accordance with the terms and conditions hereof, and the Rights Agent hereby
accepts such appointment. The Company may from time to time appoint such
co-Rights Agents as it may deem necessary or desirable.

                  SECTION 3.        ISSUE OF RIGHT CERTIFICATES.

                  (a)    Until the earlier of (i) the close of business on the
Shares Acquisition Date or (ii) the close of business on the tenth Business Day
(or such later date as may be determined by action of the Company's Board of
Directors prior to such time as any Person becomes an Acquiring Person) after
the date of the commencement of, or of the first public announcement of the
intention of any Person to commence, a tender or exchange offer the consummation
of which would result in any Person (other than the Company, any Subsidiary of
the Company, any employee benefit plan of the Company or of any Subsidiary of
the Company, any entity holding Common Shares for or pursuant to the terms of
any such plan, or any trustee, administrator, or fiduciary of such a plan)
becoming the Beneficial Owner of Common Shares of the Company aggregating 20% or
more of the then outstanding Common Shares (including in either case any such
date which is after the date of this Agreement and prior to the Payment Date;
the earlier of such dates being herein referred to as the "Distribution Date";
provided, however, that if the Shares Acquisition Date or tenth Business Day, as
the case may be, after the pertinent date occurs before the Record Date,
"Distribution Date" shall mean the Record Date), (x) the Rights will be
evidenced (subject to the provisions of Section 3(b) hereof) by the certificates
for Common Shares registered in the names of the holders thereof (which
certificates shall also be deemed to be Right Certificates) and not by separate
Right Certificates, and (y) the right to receive Right Certificates will be
transferable only in connection with the transfer of Common Shares. As soon as
practicable after the Distribution Date, the Company will prepare and execute,
the Rights Agent will countersign, and the Company will send or cause to be sent
(and the Rights Agent will, if requested, send) by first-class, insured,
postage-prepaid mail, to each record holder of Common Shares as of the close of
business on the Distribution Date, at the address of such holder shown on the
records of the Company, a Right Certificate, in substantially the form of
Exhibit A hereto (a "Right Certificate"), evidencing one Right for each Common
Share so held. As of the Distribution Date, the Rights will be evidenced solely
by such Right Certificates.

                                      -4-
<PAGE>   8

                  (b)    On the Payment Date, or as soon as practicable
thereafter, the Company will send a copy of a Summary of Rights to Purchase
Common Shares, in substantially the form of Exhibit B hereto (the "Summary of
Rights"), by first-class, postage-prepaid mail, to each record holder of Common
Shares as of the close of business on the Record Date, at the address of such
holder shown on the records of the Company. With respect to certificates for
Common Shares outstanding as of the Record Date, until the Distribution Date,
the Rights will be evidenced by such certificates registered in the names of the
holders thereof. Until the Distribution Date (or the earlier of the Redemption
Date or Final Expiration Date), the surrender for transfer of any certificate
for Common Shares outstanding on the Record Date, with or without a copy of the
Summary of Rights attached thereto, shall also constitute the transfer of the
Rights associated with the Common Shares represented thereby.

                  (c)    Certificates for Common Shares which become
outstanding (including, without limitation, certificates for reacquired Common
Shares referred to in the last sentence of this paragraph (c) and certificates
issued on the transfer of Common Shares) after the Record Date but prior to the
earliest of the Distribution Date, the Redemption Date or the Final Expiration
Date shall have impressed on, printed on, written on or otherwise affixed to
them a legend in substantially the following form:

                  This certificate also evidences and entitles the holder hereof
         to certain rights as set forth in a Rights Agreement between Badger
         Meter, Inc. and Firstar Trust Company, dated as of May 26, 1998, and as
         such agreement may be amended (the "Rights Agreement"), the terms of
         which are hereby incorporated herein by reference and a copy of which
         is on file at the principal executive offices of Badger Meter, Inc.
         Under certain circumstances, as set forth in the Rights Agreement, such
         Rights will be evidenced by separate certificates and will no longer be
         evidenced by this certificate. Badger Meter, Inc. will mail to the
         holder of this certificate a copy of the Rights Agreement without
         charge after receipt of a written request therefor. Under certain
         circumstances set forth in the Rights Agreement, Rights issued to, or
         held by, an Acquiring Person or any Affiliate or Associate thereof (as
         such terms are defined in the Rights Agreement), whether held by such
         person or any subsequent holder, shall become null and void.

With respect to such certificates containing the foregoing legend, until the
Distribution Date, the Rights associated with the Common Shares represented by
such certificates shall be evidenced by such certificates alone, and the
surrender for transfer of any such certificate shall also constitute the
transfer of the Rights associated with the Common Shares represented thereby. In
the event that the Company purchases or acquires any Common Shares after the
Record Date but prior to the Distribution Date, any Rights associated with such
Common Shares shall be deemed cancelled and retired so that the Company shall
not be entitled to exercise any Rights associated with the Common Shares which
are no longer outstanding.


                                      -5-
<PAGE>   9

                  SECTION 4. FORM OF RIGHT CERTIFICATES. The Right Certificates
(and the forms of election to purchase Common Shares and of assignment to be
printed on the reverse thereof) shall be substantially the same as Exhibit A
hereto and may have such marks of identification or designation and such
legends, summaries or endorsements printed thereon as the Company may deem
appropriate and as are not inconsistent with the provisions of this Agreement,
or as may be required to comply with any applicable law or with any rule or
regulation made pursuant thereto or with any rule or regulation of any stock
exchange on which the Rights may from time to time be listed, or to conform to
usage. Subject to the provisions of Section 22 hereof, the Right Certificates
shall entitle the holders thereof to purchase such number of Common Shares as
shall be set forth therein at the price per Common Share set forth therein (the
"Purchase Price"), but the amount and type of securities purchasable upon
exercise of each Right and the Purchase Price shall be subject to adjustment as
provided herein.

                  SECTION 5. COUNTERSIGNATURE AND REGISTRATION.

                  (a)   The Right Certificates shall be executed on behalf of
the Company by its Chairman of the Board, Chief Executive Officer, President or
any Vice President either manually or by facsimile signature, may have affixed
thereto the Company's seal or a facsimile thereof, and shall be attested by the
Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary of
the Company, either manually or by facsimile signature. The Right Certificates
shall be manually countersigned by the Rights Agent and shall not be valid for
any purpose unless countersigned. In case any officer of the Company who shall
have signed any of the Right Certificates shall cease to be such officer of the
Company before countersignature by the Rights Agent and issuance and delivery by
the Company, such Right Certificates, nevertheless, may be countersigned by the
Rights Agent and issued and delivered by the Company with the same force and
effect as though the person who signed such Right Certificates had not ceased to
be such officer of the Company; and any Right Certificate may be signed on
behalf of the Company by any person who, at the actual date of the execution of
such Right Certificate, shall be a proper officer of the Company to sign such
Right Certificate, although at the date of the execution of this Rights
Agreement any such person was not such an officer.

                  (b)   Following the Distribution Date, the Rights Agent
will keep or cause to be kept, at its principal office, books for registration
and transfer of the Right Certificates issued hereunder. Such books shall show
the names and addresses of the respective holders of the Right Certificates, the
number of Rights evidenced on its face by each of the Right Certificates and the
date of each of the Right Certificates.

                  SECTION 6. TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF
RIGHT CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHT CERTIFICATES.

                  (a)    Subject to the provisions of Section 14 hereof, at
any time after the close of business on the Distribution Date, and at or prior
to the close of business on the earlier of the Redemption Date or the Final
Expiration Date, any Right Certificate or Right Certificates (other than Right
Certificates representing Rights that have become void pursuant to 


                                      -6-
<PAGE>   10

Section 11(a)(ii) hereof or that have been exchanged pursuant to Section 24
hereof) may be transferred, split up, combined or exchanged for another Right
Certificate or Right Certificates, entitling the registered holder to purchase a
like number of Common Shares as the Right Certificate or Right Certificates
surrendered then entitled such holder to purchase. Any registered holder
desiring to transfer, split up, combine or exchange any Right Certificate or
Right Certificates shall make such request in writing delivered to the Rights
Agent, and shall surrender the Right Certificate or Right Certificates to be
transferred, split up, combined or exchanged at the principal office of the
Rights Agent. Thereupon the Rights Agent shall countersign and deliver to the
person entitled thereto a Right Certificate or Right Certificates, as the case
may be, as so requested. The Company may require payment of a sum sufficient to
cover any tax or governmental charge that may be imposed in connection with any
transfer, split up, combination or exchange of Right Certificates.

                  (b)    Upon receipt by the Company and the Rights Agent of
evidence reasonably satisfactory to them of the loss, theft, destruction or
mutilation of a Right Certificate and, in case of loss, theft or destruction, of
indemnity or security reasonably satisfactory to them, and, at the Company's
request, reimbursement to the Company and the Rights Agent of all reasonable
expenses incidental thereto, and upon surrender to the Rights Agent and
cancellation of the Right Certificate if mutilated, the Company will make and
deliver a new Right Certificate of like tenor to the Rights Agent for delivery
to the registered holder in lieu of the Right Certificate so lost, stolen,
destroyed or mutilated.

                  SECTION 7. EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE
OF RIGHTS.

                  (a)    The registered holder of any Right Certificate may
exercise the Rights evidenced thereby (except as otherwise provided herein) in
whole or in part at any time after the Distribution Date upon surrender of the
Right Certificate, with the form of election to purchase on the reverse side
thereof duly executed, to the Rights Agent at the principal office of the Rights
Agent, together with payment of the Purchase Price for each Common Share as to
which the Rights are exercised, at or prior to the earliest of (i) the close of
business on May 26, 2008 (the "Final Expiration Date"), (ii) the time at which
the Rights are redeemed as provided in Section 23 hereof (the "Redemption
Date"), and (iii) the time at which such Rights are exchanged as provided in
Section 24 hereof.

                  (b)    The Purchase Price for each Common Share pursuant to
the exercise of a Right shall initially be $140.00, shall be subject to
adjustment from time to time as provided in Sections 11 and 13 hereof and shall
be payable in lawful money of the United States of America in accordance with
paragraph (c) below.

                  (c)    Upon receipt of a Right Certificate representing
exercisable Rights, with the form of election to purchase duly executed,
accompanied by payment of the Purchase Price for the shares to be purchased and
an amount equal to any applicable transfer tax required to be paid by the holder
of such Right Certificate in accordance with Section 9 hereof, as set forth
below, the Rights Agent shall thereupon promptly (i) requisition from any
transfer agent of the 

                                      -7-

<PAGE>   11

Common Shares certificates for the number of Common Shares to be purchased and
the Company hereby irrevocably authorizes its transfer agent to comply with all
such requests, (ii) when appropriate, requisition from the Company the amount of
cash to be paid in lieu of issuance of fractional shares in accordance with
Section 14 hereof, (iii) after receipt of such certificates, cause the same to
be delivered to or upon the order of the registered holder of such Right
Certificate, registered in such name or names as may be designated by such
holder and (iv) when appropriate, after receipt, deliver such cash to or upon
the order of the registered holder of such Right Certificate. The payment of the
Purchase Price (as such amount may be reduced pursuant to Section 11(a)(iii)
hereof) shall be made in cash or by certified check, cashier's check, bank draft
or money order payable to the order of the Company, except that, if so provided
by the Board of Directors of the Company, the payment of the Purchase Price
following the occurrence of a Section 11(a)(ii) Event (as hereinafter defined)
and until the first occurrence of a Section 13 Event (as hereinafter defined)
may be made wholly or in part by delivery of a certificate or certificates (with
appropriate stock powers executed in blank attached thereto) evidencing a number
of Common Shares of the Company equal to the then Purchase Price divided by the
closing price (as determined pursuant to Section 11(d) hereof) per Common Share
on the Trading Day (as such term is hereinafter defined) immediately preceding
the date of such exercise. If the Company is obligated to issue other securities
of the Company, pay cash and/or distribute other property pursuant to Section
11(a) hereof, the Company will make all arrangements necessary so that such
other securities, cash and/or other property are available for distribution by
the Rights Agent, if and when appropriate.

                  (d)    In case the registered holder of any Right
Certificate shall exercise less than all the Rights evidenced thereby, a new
Right Certificate evidencing Rights equivalent to the Rights remaining
unexercised shall be issued by the Rights Agent to the registered holder of such
Right Certificate or to his duly authorized assigns, subject to the provisions
of Section 14 hereof.

                  (e)    Notwithstanding anything in this Agreement to the
contrary, neither the Rights Agent nor the Company shall be obligated to take
any action with respect to a registered holder of a Right Certificate upon the
occurrence of any purported transfer, assignment or exercise as set forth in
this Section 7 unless such registered holder shall have (i) completed and signed
the certificate following the form of assignment or election to purchase set
forth on the reverse of the Right Certificate surrendered for such transfer,
assignment or exercise, and (ii) provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request.

                  SECTION 8. CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES.
All Right Certificates surrendered for the purpose of exercise, transfer, split
up, combination or exchange shall, if surrendered to the Company or to any of
its agents, be delivered to the Rights Agent for cancellation or in cancelled
form, or if surrendered to the Rights Agent, shall be cancelled by it, and no
Right Certificates shall be issued in lieu thereof except as expressly permitted
by any of the provisions of this Rights Agreement. The Company shall deliver to
the Rights Agent for cancellation and retirement, and the Rights Agent shall so
cancel and retire, any other Right


                                      -8-
<PAGE>   12

Certificate purchased or acquired by the Company otherwise than upon the
exercise thereof. The Rights Agent shall deliver all cancelled Right
Certificates to the Company or shall, at the written request of the Company,
destroy such cancelled Right Certificates, and in such case shall deliver a
certificate of destruction thereof to the Company.

                  SECTION 9.  RESERVATION AND AVAILABILITY OF COMMON SHARES.

                  (a)    The Company covenants and agrees that it will cause
to be reserved and kept available out of its authorized and unissued Common
Shares or any authorized and issued Common Shares held in its treasury, the
number of Common Shares that will be sufficient to permit the exercise in full
of all outstanding Rights in accordance with Section 7.

                  (b)    So long as the Common Shares issuable upon the
exercise of Rights may be listed on any national securities exchange, the
Company shall use its best efforts to cause, from and after such time as the
Rights become exercisable, all Common Shares reserved for such issuance to be
listed on such exchange upon official notice of issuance upon such exercise.

                  (c)    The Company covenants and agrees that it will take
all such action as may be necessary to ensure that all Common Shares delivered
upon exercise of Rights shall, at the time of delivery of the certificates for
such shares (subject to payment of the Purchase Price), be duly and validly
authorized and issued and fully paid and nonassessable shares (except as
otherwise provided by any corporation law applicable to the Company).

                  (d)    The Company further covenants and agrees that it will
pay when due and payable any and all federal and state transfer taxes and
charges which may be payable in respect of the issuance or delivery of the Right
Certificates or of any Common Shares upon the exercise of Rights. The Company
shall not, however, be required to pay any transfer tax which may be payable in
respect of any transfer or delivery of Right Certificates to a person other
than, or the issuance or delivery of certificates for the Common Shares in a
name other than that of, the registered holder of the Right Certificate
evidencing Rights surrendered for exercise or to issue or to deliver any
certificates for Common Shares upon the exercise of any Rights until any such
tax shall have been paid (any such tax being payable by the holder of such Right
Certificate at the time of surrender) or until it has been established to the
Company's reasonable satisfaction that no such tax is due.

                  SECTION 10. RECORD HOLDERS OF COMMON SHARES ISSUED UPON
EXERCISE OF RIGHTS. Each person in whose name any certificate for Common Shares
is issued upon the exercise of Rights shall for all purposes be deemed to have
become the holder of record of the Common Shares represented thereby on, and
such certificate shall be dated, the date upon which the Right Certificate
evidencing such Rights was duly surrendered and payment of the Purchase Price
(and any applicable transfer taxes) was made; provided, however, that if the
date of such surrender and payment is a date upon which the Common Share
transfer books of the Company are closed, such person shall be deemed to have
become the record holder of such shares on, 


                                      -9-
<PAGE>   13

and such certificate shall be dated, the next succeeding Business Day on which
the Common Share transfer books of the Company are open.

                  SECTION 11. ADJUSTMENT OF PURCHASE PRICE, NUMBER OF SHARES OR
NUMBER OF RIGHTS. The Purchase Price, the number of Common Shares covered by
each Right and the number of Rights outstanding are subject to adjustment from
time to time as provided in this Section 11.

                  (a) (i)  In the event the Company shall at any time after the
         date of this Agreement (A) declare a dividend on the Common Shares
         payable in Common Shares, (B) subdivide the outstanding Common Shares,
         (C) combine the outstanding Common Shares into a smaller number of
         Common Shares or (D) issue any shares of its capital stock in a
         reclassification of the Common Shares (including any such
         reclassification in connection with a consolidation or merger in which
         the Company is the continuing or surviving corporation), except as
         otherwise provided in this Section 11(a), the Purchase Price in effect
         at the time of the record date for such dividend or of the effective
         date of such subdivision, combination or reclassification, and the
         number and kind of shares of capital stock issuable on such date, shall
         be proportionately adjusted so that the holder of any Right exercised
         after such time shall be entitled to receive the aggregate number and
         kind of shares of capital stock which, if such Right had been exercised
         immediately prior to such date and at a time when the Common Shares
         transfer books of the Company were open, such holder would have owned
         upon such exercise and been entitled to receive by virtue of such
         dividend, subdivision, combination or reclassification; provided,
         however, that in no event shall the consideration to be paid upon the
         exercise of one Right be less than the aggregate par value of the
         shares of capital stock of the Company issuable upon exercise of one
         Right. If an event occurs which would require an adjustment under both
         Section 11(a)(i) and Section 11(a)(ii), the adjustment provided for in
         this Section 11(a)(i) shall be in addition to, and shall be made prior
         to, any adjustment required pursuant to Section 11(a)(ii).

                      (ii) Subject to Section 24 of this Agreement, in the
         event any Person shall become an Acquiring Person, other than pursuant
         to any transaction set forth in Section 13(a), each holder of a Right
         shall thereafter have a right to receive, upon exercise thereof at a
         price equal to the then current Purchase Price multiplied by the number
         of Common Shares for which a Right is then exercisable, in accordance
         with the terms of this Agreement, such number of Common Shares of the
         Company as shall equal the result obtained by (x) multiplying the then
         current Purchase Price by the number of Common Shares for which a Right
         is then exercisable and dividing that product by (y) 50% of the then
         current per share market price of the Company's Common Shares
         (determined pursuant to Section 11(d)) on the date the Person became an
         Acquiring Person (such number of shares, the "Adjustment Shares").

                                      -10-
<PAGE>   14

                           From and after such time as a Person becomes an
         Acquiring Person (a "Section 11(a)(ii) Event"), any Rights that are or
         were acquired or beneficially owned by such Acquiring Person (or any
         Associate or Affiliate of such Acquiring Person) shall be void and any
         holder of such Rights shall thereafter have no right to exercise such
         Rights under any provision of this Agreement. No Right Certificate
         shall be issued pursuant to Section 3 that represents Rights
         beneficially owned by an Acquiring Person whose Rights would be void
         pursuant to the preceding sentence or any Associate or Affiliate
         thereof; no Right Certificate shall be issued at any time upon the
         transfer of any Rights to an Acquiring Person whose Rights would be
         void pursuant to the preceding sentence or any Associate or Affiliate
         thereof or to any nominee of such Acquiring Person, Associate or
         Affiliate; and any Right Certificate delivered to the Rights Agent for
         transfer to an Acquiring Person whose Rights would be void pursuant to
         the preceding sentence shall be cancelled. The Company shall use all
         reasonable efforts to ensure that the provisions of this paragraph are
         complied with, but shall have no liability to any holder of Right
         Certificates or other Person as a result of its failure to make any
         determinations with respect to an Acquiring Person or its Affiliates,
         Associates or transferees hereunder.

                           (iii) In the event that there shall not be sufficient
         Common Shares of the Company issued but not outstanding or authorized
         but unissued (and not reserved for issuance for purposes other than
         upon exercise of the Rights) to permit the exercise in full of the
         Rights in accordance with the foregoing subparagraph (ii), the Company
         shall: (A) determine the excess of (1) the value of the Adjustment
         Shares issuable upon the exercise of a Right (the "Current Value") over
         (2) the Purchase Price (such excess, the "Spread"), and (B) with
         respect to each Right, make adequate provision to substitute for the
         Adjustment Shares, upon payment of the applicable Purchase Price, (1)
         cash, (2) a reduction in the Purchase Price, (3) equity securities of
         the Company (including, without limitation, shares, or units of shares,
         of preferred stock which the Board of Directors of the Company has
         deemed to have the same value as Common Shares (such shares of
         preferred stock, hereinafter referred to as "common stock
         equivalents")), (4) debt securities of the Company, (5) other assets or
         (6) any combination of the foregoing, having an aggregate value equal
         to the Current Value, where such aggregate value has been determined by
         the Board of Directors of the Company based upon the advice of a
         nationally recognized investment banking firm selected by the Board of
         Directors of the Company; provided, however, if the Company shall not
         have made adequate provision to substitute for the Adjustment Shares
         pursuant to clause (B) above within thirty (30) days following the
         occurrence of a Section 11(a)(ii) Event (the "Section 11(a)(ii) Trigger
         Date"), then the Company shall be obligated to deliver, upon the
         surrender for exercise of a Right and without requiring payment of the
         Purchase Price, Common Shares (to the extent available) and then, if
         necessary, cash, which shares and/or cash have an aggregate value equal
         to the Spread. If the 


                                      -11
<PAGE>   15

         Board of Directors of the Company shall determine in good faith that it
         is likely that sufficient additional Common Shares might be authorized
         for issuance for exercise in full of the Rights, the thirty (30) day
         period set forth above may be extended to the extent necessary, but not
         more than ninety (90) days after the Section 11(a)(ii) Trigger Date, in
         order that the Company may seek shareholder approval for the
         authorization of such additional shares (such period, as it may be
         extended, the "Substitution Period"). To the extent that the Company
         determines that some action need be taken pursuant to the first and/or
         second sentences of this Section 11(a)(iii), the Company (x) shall
         provide, subject to the last paragraph of Section 11(a)(ii) hereof,
         that such action shall apply uniformly to all outstanding Rights, and
         (y) may suspend the exercisability of the Rights until the expiration
         of the Substitution Period to seek any authorization of additional
         shares and/or to decide the appropriate form of distribution to be made
         pursuant to such first sentence and to determine the value thereof. In
         the event of any such suspension, the Company shall issue a public
         announcement stating that the exercisability of the Rights has been
         temporarily suspended, as well as a public announcement at such time as
         the suspension is no longer in effect. For purposes of this Section
         11(a)(iii), the value of the Common Shares shall be the current per
         share market price (as determined pursuant to Section 11(d) hereof) of
         the Common Shares on the Section 11(a)(ii) Trigger Date and the value
         of any "common stock equivalent" shall be deemed to have the same value
         as the Common Shares on such date.

                  (b) In case the Company shall fix a record date for the
issuance of rights, options or warrants to all holders of Common Shares
entitling them (for a period expiring within 45 calendar days after such record
date) to subscribe for or purchase Common Shares (or preferred shares having
substantially the same rights, privileges and preferences as the Common Shares
("equivalent preferred shares")) or securities convertible into Common Shares at
a price per Common Share or equivalent preferred share (or having a conversion
price per share, if a security convertible into Common Shares or equivalent
preferred shares) less than the then current per share market price of the
Common Shares (as defined in Section 11(d)) on such record date, the Purchase
Price to be in effect after such record date shall be determined by multiplying
the Purchase Price in effect immediately prior to such record date by a
fraction, the numerator of which shall be the number of Common Shares
outstanding on such record date plus the number of Common Shares which the
aggregate offering price of the total number of Common Shares and/or equivalent
preferred shares so to be offered (and/or the aggregate initial conversion price
of the convertible securities so to be offered) would purchase at such current
market price and the denominator of which shall be the number of Common Shares
outstanding on such record date plus the number of additional Common Shares
and/or equivalent preferred shares to be offered for subscription or purchase
(or into which the convertible securities so to be offered are initially
convertible); provided, however, that in no event shall the consideration to be
paid upon the exercise of one Right be less than the aggregate par value of the
shares of capital stock of the Company issuable upon exercise of one Right. In
case such subscription price may be paid in a consideration part or all of which
shall be in a form other than cash, the 

                                      -12-

<PAGE>   16

value of such consideration shall be as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a statement
filed with the Rights Agent. Common Shares owned by or held for the account of
the Company shall not be deemed outstanding for the purpose of any such
computation. Such adjustment shall be made successively whenever such a record
date is fixed; and in the event that such rights, options or warrants are not so
issued, the Purchase Price shall be adjusted to be the Purchase Price which
would then be in effect if such record date had not been fixed.

                  (c)    In case the Company shall fix a record date for the
making of a distribution to all holders of the Common Shares (including any such
distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend or a dividend payable in
Common Shares) or subscription rights or warrants (excluding those referred to
in Section 11(b)), the Purchase Price to be in effect after such record date
shall be determined by multiplying the Purchase Price in effect immediately
prior to such record date by a fraction, the numerator of which shall be the
then current per share market price of the Common Shares (as defined in Section
11(d)) on such record date, less the fair market value (as determined in good
faith by the Board of Directors of the Company, whose determination shall be
described in a statement filed with the Rights Agent) of the portion of the
assets or evidences of indebtedness so to be distributed or of such subscription
rights or warrants applicable to one Common Share and the denominator of which
shall be such current per share market price of the Common Shares; provided,
however, that in no event shall the consideration to be paid upon the exercise
of one Right be less than the aggregate par value of the shares of capital stock
of the Company to be issued upon exercise of one Right. Such adjustments shall
be made successively whenever such a record date is fixed; and in the event that
such distribution is not so made, the Purchase Price shall again be adjusted to
be the Purchase Price which would then be in effect if such record date had not
been fixed.

                  (d)    For the purpose of any computation hereunder, the
"current per share market price" of any security (a "Security" for the purpose
of this Section 11(d)) on any date shall be deemed to be the average of the
daily closing prices per share of such Security for the 30 consecutive Trading
Days (as such term is hereinafter defined) immediately prior to such date;
provided, however, that in the event that the current per share market price of
the Security is determined during a period following the announcement by the
issuer of such Security of (i) a dividend or distribution on such Security
payable in shares of such Security or securities convertible into such shares,
or (ii) any subdivision, combination or reclassification of such Security and
prior to the expiration of 30 Trading Days after the ex-dividend date for such
dividend or distribution, or the record date for such subdivision, combination
or reclassification, then, and in each such case, the current per share market
price shall be appropriately adjusted to reflect the current market price per
share equivalent of such Security. The closing price for each Trading Day shall
be the last sale price, regular way, or, in case no such sale takes place on
such day, the average of the closing bid and asked prices, regular way, in
either case as reported in the principal consolidated transaction reporting
system with respect to securities listed or admitted to trading on the New York
Stock Exchange or the American Stock Exchange or, 


                                      -13-
<PAGE>   17

if the Securities are not listed or admitted to trading on the New York Stock
Exchange or the American Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Security is listed or
admitted to trading or, if the Security is not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market,
as reported by the National Association of Securities Dealers, Inc. Automated
Quotations System ("Nasdaq") or such other system then in use, or, if on any
such date the Security is not quoted by any such organization, the average of
the closing bid and asked prices as furnished by a professional market maker
making a market in the Security selected by the Board of Directors of the
Company. The term "Trading Day" shall mean a day on which the principal national
securities exchange on which the Security is listed or admitted to trading is
open for the transaction of business or, if the Security is not listed or
admitted to trading on any national securities exchange, a Business Day. If the
Common Shares are not publicly held or so listed or traded, "current per share
market price" shall mean the fair value per share as determined in good faith by
the Board of Directors of the Company, whose determination shall be described in
a statement filed with the Rights Agent.

                  (e)    No adjustment in the Purchase Price shall be required
unless such adjustment would require an increase or decrease of at least 1% in
the Purchase Price; provided, however, that any adjustments which by reason of
this Section 11(e) are not required to be made shall be carried forward and
taken into account in any subsequent adjustment. All calculations under this
Section 11 shall be made to the nearest cent or to the nearest ten-thousandth of
a share as the case may be. Notwithstanding the first sentence of this Section
11(e), any adjustment required by this Section 11 shall be made no later than
the earlier of (i) three years from the date of the transaction which requires
such adjustment or (ii) the date of the expiration of the right to exercise any
Rights.

                  (f)    If, as a result of an adjustment made pursuant to
Section 11(a), the holder of any Right thereafter exercised shall become
entitled to receive any shares of capital stock of the Company other than Common
Shares, thereafter the number of such other shares so receivable upon exercise
of any Right shall be subject to adjustment from time to time in a manner and on
terms as nearly equivalent as practicable to the provisions with respect to the
Common Shares contained in Section 11(a) through (c), inclusive, and the
provisions of Sections 7, 9, 10, 13 and 14 with respect to the Common Shares
shall apply on like terms to any such other shares.

                  (g)    All Rights originally issued by the Company
subsequent to any adjustment made to the Purchase Price hereunder shall evidence
the right to purchase, at the adjusted Purchase Price, the number of Common
Shares purchasable from time to time hereunder upon exercise of the Rights, all
subject to further adjustment as provided herein.

                  (h)    Unless the Company shall have exercised its election
as provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made 



                                      -14-
<PAGE>   18

in Section 11(b) and (c), each Right outstanding immediately prior to the making
of such adjustment shall thereafter evidence the right to purchase, at the
adjusted Purchase Price, that number of Common Shares (calculated to the nearest
ten-thousandth of a Common Share) obtained by (i) multiplying (x) the number of
Common Shares covered by a Right immediately prior to this adjustment by (y) the
Purchase Price in effect immediately prior to such adjustment of the Purchase
Price and (ii) dividing the product so obtained by the Purchase Price in effect
immediately after such adjustment of the Purchase Price.

                  (i)    The Company may elect on or after the date of any
adjustment of the Purchase Price to adjust the number of Rights, in substitution
for any adjustment in the number of Common Shares purchasable upon the exercise
of a Right. Each of the Rights outstanding after such adjustment of the number
of Rights shall be exercisable for the number of Common Shares for which a Right
was exercisable immediately prior to such adjustment. Each Right held of record
prior to such adjustment of the number of Rights shall become that number of
Rights (calculated to the nearest one ten-thousandth) obtained by dividing the
Purchase Price in effect immediately prior to adjustment of the Purchase Price
by the Purchase Price in effect immediately after adjustment of the Purchase
Price. The Company shall make a public announcement of its election to adjust
the number of Rights, indicating the record date for the adjustment, and, if
known at the time, the amount of the adjustment to be made. This record date may
be the date on which the Purchase Price is adjusted or any day thereafter, but,
if the Right Certificates have been issued, shall be at least 10 days later than
the date of the public announcement. If Right Certificates have been issued,
upon each adjustment of the number of Rights pursuant to this Section 11(i), the
Company shall, as promptly as practicable, cause to be distributed to holders of
record of Right Certificates on such record date Right Certificates evidencing,
subject to Section 14 hereof, the additional Rights to which such holders shall
be entitled as a result of such adjustment, or, at the option of the Company,
shall cause to be distributed to such holders of record in substitution and
replacement for the Right Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Company, new Right
Certificates evidencing all the Rights to which such holders shall be entitled
after such adjustment. Right Certificates so to be distributed shall be issued,
executed and countersigned in the manner provided for herein and shall be
registered in the names of the holders of record of Right Certificates on the
record date specified in the public announcement.

                  (j)    Irrespective of any adjustment or change in the
Purchase Price or the number of Common Shares issuable upon the exercise of the
Rights, the Right Certificates theretofore and thereafter issued may continue to
express the Purchase Price and the number of Common Shares which were expressed
in the initial Right Certificates issued hereunder.

                  (k)    Before taking any action that would cause an
adjustment reducing the Purchase Price below the par value, if any, of the
Common Shares issuable upon exercise of the Rights, the Company shall take any
corporate action which may, in the opinion of its counsel, be necessary in order
that the Company may validly and legally issue fully paid and nonassessable
(except as otherwise provided by any corporation law applicable to the Company)
Common Shares at such adjusted Purchase Price.

                                      -15-
<PAGE>   19

                  (l)    In any case in which this Section 11 shall require
that an adjustment in the Purchase Price be made effective as of a record date
for a specified event, the Company may elect to defer until the occurrence of
such event the issuing to the holder of any Right exercised after such record
date of the Common Shares and other capital stock or securities of the Company,
if any, issuable upon such exercise over and above the number of Common Shares
and other capital stock or securities of the Company, if any, issuable upon such
exercise on the basis of the Purchase Price in effect prior to such adjustment;
provided, however,   that the Company shall deliver to such holder a due bill or
other appropriate instrument evidencing such holder's right to receive such
additional shares upon the occurrence of the event requiring such adjustment.

                  (m)    Anything in this Section 11 to the contrary
notwithstanding, the Company shall be entitled to make such reductions in the
Purchase Price, in addition to those adjustments expressly required by this
Section 11, as and to the extent that it in its sole discretion shall determine
to be advisable in order that any consolidation or subdivision of the Common
Shares, issuance wholly for cash or any Common Shares at less than the current
market price, issuance wholly for cash of Common Shares or securities which by
their terms are convertible into or exchangeable for Common Shares, dividends on
Common Shares payable in Common Shares or issuance of rights, options or
warrants referred to hereinabove in Section 11(b), hereafter made by the Company
to holders of its Common Shares shall not be taxable to such shareholders.

                  (n)    The Company covenants and agrees that it shall not,
at any time after the earlier of the Distribution Date or the Shares Acquisition
Date, (i) consolidate with any other Person (other than a Subsidiary of the
Company in a transaction which complies with Section 11(o) hereof), (ii) merge
with or into any other Person (other than a Subsidiary of the Company in a
transaction which complies with Section 11(o) hereof), (iii) sell or transfer
(or permit any Subsidiary to sell or transfer), in one transaction, or a series
of related transactions, assets or earning power aggregating more than 50% of
the assets or earning power of the Company and its Subsidiaries (taken as a
whole) to any other Person or Persons (other than the Company and/or any of its
Subsidiaries in one or more transactions each of which complies with Section
11(o) hereof) or (iv) consummate a share exchange with any other Person, if at
the time of or immediately after such consolidation, merger, sale or share
exchange (A) there are any rights, warrants or other instruments or securities
outstanding or agreements in effect which would substantially diminish or
otherwise eliminate the benefits intended to be afforded by the Rights, (B)
prior to, simultaneously with or immediately after such consolidation, merger,
sale or share exchange the shareholders of the Person who constitute, or would
constitute, the "Principal Party" for purposes of Section 13(a) hereof shall
have received a distribution of Rights previously owned by such Person or any of
its Affiliates and Associates or (C) the form or nature of organization of the
Principal Party would preclude or limit the exercisability of the Rights.

                  (o)    The Company covenants and agrees that, after the
Distribution Date, it will not, except as permitted by Section 23, Section 24 or
Section 27 hereof, take (or permit any 

                                      -16=

<PAGE>   20

Subsidiary to take) any action if at the time such action is taken it is
reasonably foreseeable that such action will diminish substantially or otherwise
eliminate the benefits intended to be afforded by the Rights.

                  SECTION 12. CERTIFICATE OF ADJUSTED PURCHASE PRICE OR NUMBER
OF SHARES. Whenever an adjustment is made as provided in Sections 11 and 13
hereof, the Company shall promptly (a) prepare a certificate setting forth such
adjustment, and a brief statement of the facts accounting for such adjustment,
(b) file with the Rights Agent and with each transfer agent for the Common
Shares a copy of such certificate and (c) mail a brief summary thereof to each
holder of a Right Certificate in accordance with Section 25 hereof.

                  SECTION 13. CONSOLIDATION, MERGER, SHARE EXCHANGE OR SALE OR 
TRANSFER OF ASSETS OR EARNING POWER.

                  (a)    In the event that, on or following the Shares
Acquisition Date, directly or indirectly, (x) the Company shall consolidate
with, or merge with and into, any other Person (other than a Subsidiary of the
Company in a transaction which complies with Section 11(o) hereof), and the
Company shall not be the continuing or surviving corporation of such
consolidation or merger, (y) any Person (other than a Subsidiary of the Company
in a transaction which complies with Section 11(o) hereof) shall consolidate
with, or merge with or into, the Company, and the Company shall be the
continuing or surviving corporation of such consolidation or merger, or any
Person or Persons (other than a Subsidiary of the Company in a transaction that
complies with Section 11(o) hereof) shall consummate a share exchange with the
Company, and, in connection with such consolidation, merger or share exchange,
all or part of the outstanding Common Shares shall be changed into or exchanged
for stock or other securities of any other Person (or the Company) or cash or
any other property, or (z) the Company shall sell or otherwise transfer (or one
or more of its Subsidiaries shall sell or otherwise transfer), in one
transaction or a series of related transactions, assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any Person or Persons (other than the Company
or any Subsidiary of the Company in one or more transactions each of which
complies with Section 11(o) hereof), then, and in each such case, proper
provision shall be made so that: (i) each holder of a Right (except as otherwise
provided herein) shall thereafter have the right to receive, upon the exercise
thereof at a price equal to the then current Purchase Price multiplied by the
number of Common Shares for which a Right is then exercisable (or, if a Section
11(a)(ii) Event has occurred prior to the first occurrence of any of the events
described in clauses (x), (y) or (z) above (a "Section 13 Event"), the Purchase
Price in effect immediately prior to the first occurrence of a Section 11(a)(ii)
Event multiplied by the number of Common Shares for which a Right was
exercisable immediately prior to such first occurrence), in accordance with the
terms of this Agreement, such number of validly authorized and issued, fully
paid, nonassessable (except as otherwise required by any corporation law
applicable to the Principal Party (as such term is hereinafter defined)) and
freely tradeable Common Shares of the Principal Party, not subject to any liens,
encumbrances, rights of first refusal or other adverse claims, as shall be equal
to the result obtained by (1) multiplying the then current Purchase Price by the
number of Common 


                                      -17-
<PAGE>   21

Shares for which a Right is exercisable immediately prior to the first
occurrence of a Section 13 Event (or, if a Section 11(a)(ii) Event has occurred
prior to the first occurrence of a Section 13 Event, multiplying the number of
such shares for which a Right was exercisable immediately prior to the first
occurrence of a Section 11(a)(ii) Event by the Purchase Price in effect
immediately prior to such first occurrence), and dividing that product (which,
following the first occurrence of a Section 13 Event, shall be referred to as
the "Purchase Price" for each Right and for all purposes of this Agreement) by
(2) 50% of the current market price (determined pursuant to Section 11(d)
hereof) per Common Share of such Principal Party on the date of consummation of
such Section 13 Event; (ii) such Principal Party shall thereafter be liable for,
and shall assume, by virtue of such Section 13 Event, all the obligations and
duties of the Company pursuant to this Agreement; (iii) the term "Company" shall
thereafter be deemed to refer to such Principal Party, it being specifically
intended that the provisions of Section 11 hereof shall apply only to such
Principal Party following the first occurrence of a Section 13 Event; (iv) such
Principal Party shall take such steps (including, but not limited to, the
reservation of a sufficient number of its Common Shares) in connection with the
consummation of any such transaction as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to its Common Shares thereafter deliverable upon the exercise of
the Rights; and (v) the provisions of Section 11(a)(ii) hereof shall be of no
effect following the first occurrence of any Section 13 Event.

                  (b)     "Principal Party" shall mean

                          (i) in the case of any transaction described in
         clause (x) or (y) of the first sentence of Section 13(a), the Person
         that is the issuer of any securities into which Common Shares of the
         Company are converted in such merger, consolidation or share exchange,
         and if no securities are so issued, (A) the Person that is the other
         party to the merger, consolidation or share exchange and that survives
         such merger or consolidation, or, if there is more than one such
         Person, the Person the Common Shares of which have the greatest
         aggregate market value of shares outstanding or (B) if the Person that
         is the other party to the merger or consolidation does not survive the
         merger or consolidation, the Person that does survive the merger or
         consolidation (including the Company if it survives); and

                          (ii) in the case of any transaction described in
         clause (z) of the first sentence of Section 13(a), the Person that is
         the party receiving the greatest portion of the assets or earning power
         transferred pursuant to such transaction or transactions;

provided, however, that in any such case, (1) if the Common Shares of such
Person are not at such time and have not been continuously over the preceding
twelve (12) month-period registered under Section 12 of the Exchange Act, and
such Person is a direct or indirect Subsidiary of another Person the Common
Shares of which are and have been so registered, "Principal Party" shall refer
to such other Person; and (2) in case such Person is a Subsidiary, 

                                      -18-

<PAGE>   22

directly or indirectly, of more than one Person, the Common Shares of two or
more of which are and have been so registered, "Principal Party" shall refer to
whichever of such Persons is the issuer of the Common Shares having the greatest
aggregate market value.

                  (c)    The Company shall not consummate any such
consolidation, merger, share exchange, sale or transfer unless the Principal
Party shall have a sufficient number of authorized Common Shares which have not
been issued or reserved for issuance to permit the exercise in full of the
Rights in accordance with this Section 13 and unless prior thereto the Company
and such Principal Party shall have executed and delivered to the Rights Agent a
supplemental agreement providing for the terms set forth in paragraphs (a) and
(b) of this Section 13 and further providing that, as soon as practicable after
the date of any consolidation, merger, share exchange or sale of assets
mentioned in paragraph (a) of this Section 13, the Principal Party will:

                         (i) prepare and file a registration statement under
         the Securities Act of 1933, as amended (the "Act"), with respect to the
         Rights and the securities purchasable upon exercise of the Rights on an
         appropriate form, and will use its best efforts to cause such
         registration statement to (A) become effective as soon as practicable
         after such filing and (B) remain effective (with a prospectus at all
         times meeting the requirements of the Act) until the Expiration Date;
         and

                         (ii) will deliver to holders of the Rights historical
         financial statements for the Principal Party and each of its Affiliates
         which comply in all respects with the requirements for registration on
         Form 10 under the Exchange Act.

The provisions of this Section 13 shall similarly apply to successive mergers,
consolidations, share exchanges, sales or other transfers. In the event that a
Section 13 Event shall occur at any time after the occurrence of a Section
11(a)(ii) Event, the Rights which have not theretofore been exercised shall
thereafter become exercisable in the manner described in Section 13(a).

                  SECTION 14. FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

                  (a)    The Company shall not be required to issue fractions
of Rights or to distribute Right Certificates which evidence fractional Rights.
In lieu of such fractional Rights, there shall be paid to the registered holders
of the Right Certificates with regard to which such fractional Rights would
otherwise be issuable, an amount in cash equal to the same fraction of the
current market value of a whole Right. For the purposes of this Section 14(a),
the current market value of a whole Right shall be the closing price of the
Rights for the Trading Day immediately prior to the date on which such
fractional Rights would have been otherwise issuable. The closing price for any
day shall be the last sale price, regular way, or, in case no such sale takes
place on such day, the average of the closing bid and asked prices, regular way,
in either case as reported in the principal consolidated transaction reporting
system with respect to securities listed or admitted to trading on the New York
Stock Exchange or the American Stock Exchange or, if the Rights are not listed
or admitted to trading on the New York Stock 


                                      -19-
<PAGE>   23

Exchange or the American Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Rights are listed or
admitted to trading or, if the Rights are not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market,
as reported by Nasdaq or such other system then in use or, if on any such date
the Rights are not quoted by any such organization, the average of the closing
bid and asked prices as furnished by a professional market maker making a market
in the Rights selected by the Board of Directors of the Company. If on any such
date no such market maker is making a market in the Rights the fair value of the
Rights on such date as determined in good faith by the Board of Directors of the
Company shall be used.

                  (b)    The Company shall not be required to issue fractions
of Common Shares upon exercise of the Rights or to distribute certificates which
evidence fractional Common Shares. In lieu of fractional Common Shares, the
Company shall pay to the registered holders of Right Certificates at the time
such Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of one Common Share. For purposes of this
Section 14(b), the current market value of a Common Share shall be the closing
price of a Common Share (as determined pursuant to the second sentence of
Section 11(d)(i) hereof) for the Trading Day immediately prior to the date of
such exercise.

                  (c)    The holder of a Right by the acceptance of the Right
expressly waives his right to receive any fractional Rights or any fractional
shares upon exercise of a Right (except as provided above).

                  SECTION 15. RIGHTS OF ACTION. All rights of action in respect
of this Agreement, excepting the rights of action given to the Rights Agent
under Section 18 hereof, are vested in the respective registered holders of the
Right Certificates (and, prior to the Distribution Date, the registered holders
of the Common Shares); and any registered holder of any Right Certificate (or,
prior to the Distribution Date, of the Common Shares), without the consent of
the Rights Agent or of the holder of any other Right Certificate (or, prior to
the Distribution Date, of the Common Shares), may, in his own behalf and for his
own benefit, enforce, and may institute and maintain any suit, action or
proceeding against the Company to enforce, or otherwise act in respect of, his
right to exercise the Rights evidenced by such Right Certificate in the manner
provided in such Right Certificate and in this Agreement. Without limiting the
foregoing or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and will be entitled to specific performance of
the obligations under, and injunctive relief against actual or threatened
violations of the obligations of any Person subject to, this Agreement.

                                      -20-
<PAGE>   24

                  SECTION 16. AGREEMENT OF RIGHT HOLDERS. Every holder of a
Right, by accepting the same, consents and agrees with the Company and the
Rights Agent and with every other holder of a Right that:

                  (a) prior to the Distribution Date, the Rights will be
         transferable only in connection with the transfer of the Common Shares;

                  (b) after the Distribution Date, the Right Certificates are
         transferable only on the registry books of the Rights Agent if
         surrendered at the principal office of the Rights Agent, duly endorsed
         or accompanied by a proper instrument of transfer; and

                  (c) the Company and the Rights Agent may deem and treat the
         person in whose name the Right Certificate (or, prior to the
         Distribution Date, the associated Common Share certificate) is
         registered as the absolute owner thereof and of the Rights evidenced
         thereby (notwithstanding any notations of ownership or writing on the
         Right Certificates or the associated Common Share certificate made by
         anyone other than the Company or the Rights Agent) for all purposes
         whatsoever, and neither the Company nor the Rights Agent shall be
         affected by any notice to the contrary.

                  SECTION 17. RIGHT CERTIFICATE HOLDER NOT DEEMED A SHAREHOLDER.
No holder, as such, of any Right Certificate shall be entitled to vote, receive
dividends or other distributions or be deemed for any purpose the holder of the
Common Shares or any other securities of the Company which may at any time be
issuable on the exercise of the Rights represented thereby, nor shall anything
contained herein or in any Right Certificate be construed to confer upon the
holder of any Right Certificate, as such, any of the rights of a shareholder of
the Company or any right to vote for the election of directors or upon any
matter submitted to shareholders at any meeting thereof, or to give or withhold
consent to any corporate action, or to receive notice of meetings or other
actions affecting shareholders (except as provided in Section 25 hereof), or to
receive dividends or subscription rights, or otherwise, until the Right or
Rights evidenced by such Right Certificate shall have been exercised in
accordance with the provisions hereof.

                  SECTION 18. CONCERNING THE RIGHTS AGENT.

                  (a)    The Company agrees to pay to the Rights Agent
reasonable compensation for all services rendered by it hereunder and, from time
to time, on demand of the Rights Agent, its reasonable expenses and counsel fees
and other disbursements incurred in the administration and execution of this
Agreement and the exercise and performance of its duties hereunder. The Company
also agrees to indemnify the Rights Agent for, and to hold it harmless against,
any loss, liability, or expense, incurred without negligence, bad faith or
willful misconduct on the part of the Rights Agent, for anything done or omitted
by the Rights Agent in connection with the acceptance and administration of this
Agreement, including the costs and expenses of defending against any claim of
liability in the premises.

                                      -21-
<PAGE>   25

                  (b)    The Rights Agent shall be protected and shall incur
no liability for, or in respect of any action taken, suffered or omitted by it
in connection with, its administration of this Agreement in reliance upon any
Right Certificate or certificate for the Common Shares or for other securities
of the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement, or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
person or persons, or otherwise upon the advice of counsel as set forth in
Section 20 hereof.

                  SECTION 19. MERGER OR CONSOLIDATION OR CHANGE OF NAME OF
RIGHTS AGENT.

                  (a)    Any corporation into which the Rights Agent or any
successor Rights Agent may be merged or with which it may be consolidated, or
any corporation resulting from any merger or consolidation to which the Rights
Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the stock transfer or corporate trust business of the Rights Agent
or any successor Rights Agent, shall be the successor to the Rights Agent under
this Agreement without the execution or filing of any paper or any further act
on the part of any of the parties hereto, provided that such corporation would
be eligible for appointment as a successor Rights Agent under the provisions of
Section 21 hereof. In case at the time such successor Rights Agent shall succeed
to the agency created by this Agreement, any of the Right Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the countersignature of the predecessor Rights Agent and deliver such
Right Certificates so countersigned; and in case at that time any of the Right
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Right Certificates either in the name of the predecessor Rights
Agent or in the name of the successor Rights Agent; and in all such cases such
Right Certificates shall have the full force provided in the Right Certificates
and in this Agreement.

                  (b)    In case at any time the name of the Rights Agent
shall be changed and at such time any of the Right Certificates shall have been
countersigned but not delivered, the Rights Agent may adopt the countersignature
under its prior name and deliver Right Certificates so countersigned; and in
case at that time any of the Right Certificates shall not have been
countersigned, the Rights Agent may countersign such Right Certificates either
in its prior name or in its changed name; and in all such cases such Right
Certificates shall have the full force provided in the Right Certificates and in
this Agreement.

                  SECTION 20. DUTIES OF RIGHTS AGENT. The Rights Agent
undertakes the duties and obligations imposed by this Agreement upon the
following terms and conditions, by all of which the Company and the holders of
Right Certificates, by their acceptance thereof, shall be bound:

                  (a) The Rights Agent may consult with legal counsel (who may
         be legal counsel for the Company), and the opinion of such counsel
         shall be full and 

                                      -22-
<PAGE>   26

         complete authorization and protection to the Rights Agent as to any
         action taken or omitted by it in good faith and in accordance with such
         opinion.

                  (b) Whenever in the performance of its duties under this
         Agreement the Rights Agent shall deem it necessary or desirable that
         any fact or matter be proved or established by the Company prior to
         taking or suffering any action hereunder, such fact or matter (unless
         other evidence in respect thereof be herein specifically prescribed)
         may be deemed to be conclusively proved and established by a
         certificate signed by the Chairman of the Board, the Chief Executive
         Officer or the President and by the Treasurer or any Assistant
         Treasurer or the Secretary or any Assistant Secretary of the Company
         and delivered to the Rights Agent; and such certificate shall be full
         authorization to the Rights Agent for any action taken or suffered in
         good faith by it under the provisions of this Agreement in reliance
         upon such certificate.

                  (c) The Rights Agent shall be liable hereunder to the Company
         and any other Person only for its own negligence, bad faith or willful
         misconduct.

                  (d) The Rights Agent shall not be liable for or by reason of
         any of the statements of fact or recitals contained in this Agreement
         or in the Right Certificates (except its countersignature thereof) or
         be required to verify the same, but all such statements and recitals
         are and shall be deemed to have been made by the Company only.

                  (e) The Rights Agent shall not be under any responsibility in
         respect of the validity of this Agreement or the execution and delivery
         hereof (except the due authorization, execution and delivery hereof by
         the Rights Agent) or in respect of the validity or execution of any
         Right Certificate (except its countersignature thereof); nor shall it
         be responsible for any breach by the Company of any covenant or
         condition contained in this Agreement or in any Right Certificate; nor
         shall it be responsible for any change in the exercisability of the
         Rights (including the Rights becoming void pursuant to Section
         11(a)(ii) hereof) or any adjustment in the terms of the Rights
         (including the manner, method or amount thereof) provided for in
         Section 3, 11, 13, 23 or 24, or the ascertaining of the existence of
         facts that would require any such change or adjustment (except with
         respect to the exercise of Rights evidenced by Right Certificates after
         actual notice that such change or adjustment is required); nor shall it
         by any act hereunder be deemed to make any representation or warranty
         as to the authorization or reservation of any Common Shares or other
         securities to be issued pursuant to this Agreement or any Right
         Certificate or as to whether any Common Shares or other securities
         will, when issued, be validly authorized and issued, fully paid and
         nonassessable.

                                      -23-
<PAGE>   27

                  (f) The Company agrees that it will perform, execute,
         acknowledge and deliver or cause to be performed, executed,
         acknowledged and delivered all such further and other acts, instruments
         and assurances as may reasonably be required by the Rights Agent for
         the carrying out or performing by the Rights Agent of the provisions of
         this Agreement.

                  (g) The Rights Agent is hereby authorized and directed to
         accept instructions with respect to the performance of its duties
         hereunder from any one of the Chairman of the Board, the Chief
         Executive Officer, the President, the Secretary, any Assistant
         Secretary, the Treasurer or any Assistant Treasurer of the Company, and
         to apply to such officers for advice or instructions in connection with
         its duties, and it shall not be liable for any action taken or suffered
         by it in good faith in accordance with instructions of any such officer
         or for any delay in acting while waiting for those instructions.

                  (h) The Rights Agent and any shareholder, director, officer or
         employee of the Rights Agent may buy, sell or deal in, or act as the
         transfer agent for, any of the Rights, Common Shares or other
         securities of the Company or become pecuniarily interested in any
         transaction in which the Company may be interested, or contract with or
         lend money to the Company or otherwise act as fully and freely as
         though it were not Rights Agent under this Agreement. Nothing herein
         shall preclude the Rights Agent from acting in any other capacity for
         the Company or for any other legal entity.

                  (i) The Rights Agent may execute and exercise any of the
         rights or powers hereby vested in it or perform any duty hereunder
         either itself or by or through its attorneys or agents, and the Rights
         Agent shall not be answerable or accountable for any act, default,
         neglect or misconduct of any such attorneys or agents or for any loss
         to the Company resulting from any such act, default, neglect or
         misconduct, provided reasonable care was exercised in the selection and
         continued employment thereof.



                                      -24-
<PAGE>   28


                  SECTION 21. CHANGE OF RIGHTS AGENT. The Rights Agent or any
successor Rights Agent may resign and be discharged from its duties under this
Agreement upon 30 days' notice in writing mailed to the Company and to each
transfer agent of the Common Shares by registered or certified mail, and to the
holders of the Right Certificates by first-class mail. The Company may remove
the Rights Agent or any successor Rights Agent upon 30 days' notice in writing,
mailed to the Rights Agent or successor Rights Agent, as the case may be, and to
each transfer agent of the Common Shares by registered or certified mail, and to
the holders of the Right Certificates by first-class mail. If the Rights Agent
shall resign or be removed or shall otherwise become incapable of acting, the
Company shall appoint a successor to the Rights Agent. If the Company shall fail
to make such appointment within a period of 30 days after giving notice of such
removal or after it has been notified in writing of such resignation or
incapacity by the resigning or incapacitated Rights Agent or by the holder of a
Right Certificate (who shall, with such notice, submit his Right Certificate for
inspection by the Company), then the registered holder of any Right Certificate
may apply to any court of competent jurisdiction for the appointment of a new
Rights Agent. Any successor Rights Agent, whether appointed by the Company or by
such a court, shall be (a) a corporation organized and doing business under the
laws of the United States or of the State of New York or the State of Wisconsin
(or of any other state of the United States so long as such corporation is
authorized to do business as a banking institution in the State of New York or
the State of Wisconsin), in good standing, having an office or agency in the
State of Wisconsin or the State of New York, which is authorized under such laws
to exercise corporate trust or stock transfer powers and is subject to
supervision or examination by federal or state authority and which has at the
time of its appointment as Rights Agent a combined capital and surplus of at
least $50 million, or (b) an Affiliate of a corporation described in clause (a)
of this sentence. After appointment, the successor Rights Agent shall be vested
with the same powers, rights, duties and responsibilities as if it had been
originally named as Rights Agent without further act or deed; but the
predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose. Not later
than the effective date of any such appointment the Company shall file notice
thereof in writing with the predecessor Rights Agent and each transfer agent of
the Common Shares, and mail a notice thereof in writing to the registered
holders of the Right Certificates. Failure to give any notice provided for in
this Section 21, however, or any defect therein, shall not affect the legality
or validity of the resignation or removal of the Rights Agent or the appointment
of the successor Rights Agent, as the case may be.

                  SECTION 22. ISSUANCE OF NEW RIGHT CERTIFICATES.
Notwithstanding any of the provisions of this Agreement or of the Rights to the
contrary, the Company may, at its option, issue new Right Certificates
evidencing Rights in such form as may be approved by its Board of Directors to
reflect any adjustment or change in the Purchase Price and the number or kind or
class of shares or other securities or property purchasable under the Right
Certificates made in accordance with the provisions of this Agreement.

                                      -25-
<PAGE>   29

                  SECTION 23.       REDEMPTION.

                  (a) The Rights may be redeemed by action of the Board of
Directors pursuant to subsection (b) of this Section 23 and shall not be
redeemed in any other manner.

                  (b) The Board of Directors of the Company may, at its option,
at any time prior to such time as any Person becomes an Acquiring Person, redeem
all but not less than all the then outstanding Rights at a redemption price of
$.01 per Right, appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after the date hereof (such redemption
price being hereinafter referred to as the "Redemption Price"). The redemption
of the Rights by the Board of Directors may be made effective at such time on
such basis and with such conditions as the Board of Directors in its sole
discretion may establish. Notwithstanding anything contained in this Agreement
to the contrary, the Rights shall not be exercisable after the first occurrence
of a Section 11(a)(ii) Event until such time as the Company's right of
redemption hereunder has expired.

                  (c) Immediately upon the effectiveness of the action of
the Board of Directors of the Company ordering the redemption of the Rights
pursuant to subsection (b) of this Section 23, and without any further action
and without any notice, the right to exercise the Rights will terminate and the
only right thereafter of the holders of Rights shall be to receive the
Redemption Price. The Company shall promptly give public notice of any such
redemption; provided, however, that the failure to give, or any defect in, any
such notice shall not affect the validity of such redemption. Within 10 days
after the effectiveness of the action of the Board of Directors ordering the
redemption of the Rights pursuant to subsection (b), the Company shall mail a
notice of redemption to all the holders of the then outstanding Rights at their
last addresses as they appear upon the registry books of the Rights Agent or,
prior to the Distribution Date, on the registry books of the transfer agent for
the Common Shares. Any notice which is mailed in the manner herein provided
shall be deemed given, whether or not the holder receives the notice. Each such
notice of redemption will state the method by which the payment of the
Redemption Price will be made. Neither the Company nor any of its Affiliates or
Associates may redeem, acquire or purchase for value any Rights at any time in
any manner other than that specifically set forth in this Section 23 or in
Section 24 hereof, and other than in connection with the purchase of Common
Shares prior to the Distribution Date.

                  SECTION 24.       EXCHANGE.

                  (a)    The Board of Directors of the Company may, at its
option, at any time after any Person becomes an Acquiring Person, exchange all
or part of the then outstanding and exercisable Rights (which shall not include
Rights that have become void pursuant to the provisions of Section 11(a)(ii)
hereof) for Common Shares of the Company at an exchange ratio of one Common
Share per Right, appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after the date hereof (such exchange
ratio being hereinafter referred to as the "Exchange Ratio"). Notwithstanding
the foregoing, the Board of Directors shall not be empowered to effect such
exchange at any time after any Person (other than the 


                                      -26-
<PAGE>   30

Company, any Subsidiary of the Company, any employee benefit plan of the Company
or any such Subsidiary, any entity holding Common Shares for or pursuant to the
terms of any such plan, or any trustee, administrator or fiduciary of such a
plan), together with all Affiliates and Associates of such Person, becomes the
Beneficial Owner of 50% or more of the Common Shares then outstanding.

                  (b)    Immediately upon the action of the Board of Directors
of the Company ordering the exchange of any Rights pursuant to subsection (a) of
this Section 24 and without any further action and without any notice, the right
to exercise such Rights shall terminate and the only right thereafter of a
holder of such Rights shall be to receive that number of Common Shares equal to
the number of such Rights held by such holder multiplied by the Exchange Ratio.
The Company shall promptly give public notice of any such exchange; provided,
however, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange. The Company promptly shall mail a notice
of any such exchange to all of the holders of such Rights at their last
addresses as they appear upon the registry books of the Rights Agent. Any notice
which is mailed in the manner herein provided shall be deemed given, whether or
not the holder receives the notice. Each such notice of exchange will state the
method by which the exchange of the Common Shares for Rights will be effected
and, in the event of any partial exchange, the number of Rights which will be
exchanged. Any partial exchange shall be effected pro rata based on the number
of Rights (other than Rights which have become void pursuant to the provisions
of Section 11(a)(ii) hereof) held by each holder of Rights.

                  (c)    In the event that there shall not be sufficient
Common Shares issued but not outstanding or authorized but unissued to permit
any exchange of Rights as contemplated in accordance with this Section 24, the
Company shall take all such action as may be necessary to authorize additional
Common Shares for issuance upon exchange of the Rights.

                  (d)    The Company shall not be required to issue fractions
of Common Shares or to distribute certificates which evidence fractional Common
Shares. In lieu of such fractional Common Shares, the Company shall pay to the
registered holders of the Right Certificates with regard to which such
fractional Common Shares would otherwise be issued an amount in cash equal to
the same fraction of the current market value of a whole Common Share. For the
purposes of this paragraph (d), the current market value of a whole Common Share
shall be the closing price of a Common Share (as determined pursuant to the
second sentence of Section 11(d) hereof) for the Trading Day immediately prior
to the date of exchange pursuant to this Section 24.

                  SECTION 25.       NOTICE OF CERTAIN EVENTS.

                  (a)    In case the Company shall propose, after the
Distribution Date, (i) to pay any dividend payable in stock of any class to the
holders of Common Shares or to make any other distribution to the holders of
Common Shares (other than a regular quarterly cash dividend), (ii) to offer to
the holders of Common Shares rights or warrants to subscribe for or to purchase
any additional Common Shares or shares of stock of any class or any other


                                      -27-
<PAGE>   31

securities, rights or options, (iii) to effect any reclassification of Common
Shares (other than a reclassification involving only the subdivision of
outstanding Common Shares), (iv) to effect any consolidation or merger into or
with (other than a merger of a Subsidiary into or with the Company), to effect
any share exchange with or to effect any sale or other transfer (or to permit
one or more of its Subsidiaries to effect any sale or other transfer), in one or
more transactions, of 50% or more of the assets or earning power of the Company
and its Subsidiaries (taken as a whole) to, any other Person, or (v) to effect
the liquidation, dissolution or winding up of the Company, then, in each such
case, the Company shall give to each holder of a Right Certificate, in
accordance with Section 26 hereof, a notice of such proposed action, which shall
specify the record date for the purposes of such stock dividend, or distribution
of rights or warrants, or the date on which such reclassification,
consolidation, merger, share exchange, sale, transfer, liquidation, dissolution,
or winding up is to take place and the date of participation therein by the
holders of the Common Shares if any such date is to be fixed, and such notice
shall be so given in the case of any action covered by clause (i) or (ii) above
at least 10 days prior to the record date for determining holders of Common
Shares for purposes of such action, and in the case of any such other action, at
least 10 days prior to the date of the taking of such proposed action or the
date of participation therein by the holders of the Common Shares, whichever
shall be the earlier.

                  (b)    In case any of Section 11(a)(ii) Event or Section 13
Event shall occur, then, in any such case, (i) the Company shall as soon as
practicable thereafter give to each holder of a Right Certificate, in accordance
with Section 26 hereof, a notice of the occurrence of such event, which notice
shall include a brief summary of the Section 11(a)(ii) Event or Section 13
Event, as the case may be, and the consequences thereof to holders of Rights.

                  SECTION 26.       NOTICES.

                  (a)    Notices or demands authorized by this Agreement to be
given or made by the Rights Agent or by the holder of any Right Certificate to
or on the Company shall be sufficiently given or made if sent by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                         Badger Meter, Inc.
                         4545 W. Brown Deer Road
                         P.O. Box 23099
                         Milwaukee, Wisconsin 53223-0099
                         Attention:   Chief Executive Officer

                  (b)    Subject to the provisions of Section 21 hereof, any
notice or demand authorized by this Agreement to be given or made by the Company
or by the holder of any Right Certificate to or on the Rights Agent shall be
sufficiently given or made if sent by first-class mail, postage prepaid,
addressed (until another address is filed in writing with the Company) as
follows:

                                      -28-
<PAGE>   32

                         Firstar Trust Company
                         1555 North RiverCenter Drive
                         Suite 301
                         Milwaukee, Wisconsin  53212
                         Attention:   Corporate Trust Department

                  (c)    Notices or demands authorized by this Agreement to be
given or made by the Company or the Rights Agent to the holder of any Right
Certificate shall be sufficiently given or made if sent by first-class mail,
postage prepaid, addressed to such holder at the address of such holder as shown
on the registry books of the Company.

                  SECTION 27. SUPPLEMENTS AND AMENDMENTS. Prior to the
Distribution Date and subject to the penultimate sentence of this Section 27,
the Company may and the Rights Agent shall, if the Company so directs,
supplement or amend any provision of this Agreement without the approval of any
holders of certificates representing Common Shares. Without limiting the
foregoing, the Company may at any time prior to such time as any Person becomes
an Acquiring Person amend this Agreement to lower the thresholds set forth in
Sections 1(a) and 3(a) hereof from 20% to not less than 10%, with appropriate
exceptions for persons then beneficially owning Common Shares of the Company
constituting a percentage of the number of Common Shares then outstanding equal
to or in excess of the new threshold. From and after the Distribution Date and
subject to the penultimate sentence of this Section 27, the Company and the
Rights Agent shall, if the Company so directs, supplement or amend this
Agreement without the approval of any holders of Right Certificates in order (i)
to cure any ambiguity, (ii) to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provision herein,
(iii) to shorten or lengthen any time period hereunder, or (iv) to change or
supplement the provisions hereunder in any manner which the Company may deem
necessary or desirable and which shall not adversely affect the interests of the
holders of Right Certificates (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person); provided, that from and after the
Distribution Date this Agreement may not be supplemented or amended to lengthen,
pursuant to clause (iii) of this sentence, (A) a time period relating to when
the Rights may be redeemed at such time as the Rights are not then redeemable,
or (B) any other time period unless such lengthening is for the purpose of
protecting, enhancing or clarifying the rights of, and/or the benefits to, the
holders of Rights. Upon the delivery of a certificate from an appropriate
officer of the Company which states that the proposed supplement or amendment is
in compliance with the terms of this Section 27, the Rights Agent shall execute
such supplement or amendment, provided that such supplement or amendment does
not adversely affect the rights or obligations of the Rights Agent under Section
18 or Section 20 of this Rights Agreement. Notwithstanding anything contained in
this Agreement to the contrary, no supplement or amendment shall be made which
reduces the then effective Redemption Price or moves to an earlier date the then
effective Final Expiration Date. Prior to the Distribution Date, the interests
of the holders of Rights shall be deemed coincident with the interests of the
holders of Common Shares.

                                      -29-
<PAGE>   33

                  SECTION 28. SUCCESSORS. All the covenants and provisions of
this Agreement by or for the benefit of the Company or the Rights Agent shall
bind and inure to the benefit of their respective successors and assigns
hereunder.

                  SECTION 29. DETERMINATIONS BY THE BOARD OF DIRECTORS. For all
purposes of this Rights Agreement, any calculation of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular percentage of such outstanding Common Shares of which any Person
is the Beneficial Owner, shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulation under the Exchange Act.
The Board of Directors of the Company shall have the exclusive power and
authority to administer this Rights Agreement and to exercise all rights and
powers specifically granted to the Board or to the Company, or as may be
necessary or advisable in the administration of this Rights Agreement,
including, without limitation, the right and power to (i) interpret the
provisions of this Rights Agreement, and (ii) make all determinations deemed
necessary or advisable for the administration of this Rights Agreement
(including a determination to redeem or not redeem the Rights or to amend the
Rights Agreement or a determination that an adjustment to the Redemption Price
or Exchange Ratio is or is not appropriate). All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board
in good faith, shall (x) be final, conclusive and binding on the Company, the
Rights Agent, the holders of the Rights and all other parties, and (y) not
subject the Board to any liability to the holders of the Rights.

                  SECTION 30. BENEFITS OF THIS AGREEMENT. Nothing in this
Agreement shall be construed to give to any person or corporation other than the
Company, the Rights Agent and the registered holders of the Right Certificates
(and, prior to the Distribution Date, the Common Shares) any legal or equitable
right, remedy or claim under this Agreement; but this Agreement shall be for the
sole and exclusive benefit of the Company, the Rights Agent and the registered
holders of the Right Certificates (and, prior to the Distribution Date, the
Common Shares).

                  SECTION 31. SEVERABILITY. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated.

                  SECTION 32. GOVERNING LAW. This Agreement and each Right
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the State of Wisconsin and for all purposes shall be governed by and
construed in accordance with the laws of such State applicable to contracts to
be made and performed entirely within such State.

                  SECTION 33. COUNTERPARTS. This Agreement may be executed in
any number of counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument.

                                      -30-
<PAGE>   34

                  SECTION 34. DESCRIPTIVE HEADINGS. Descriptive headings of the
several Sections of this Agreement are inserted for convenience only and shall
not control or affect the meaning or construction of any of the provisions
hereof.


                                     ******
     
                                      -31-
                                                    


<PAGE>   35


                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and attested, all as of the day and year first
above written.

                                              BADGER METER, INC.

Attest:

By  /s/ Deirdre C. Elliott                    By  /s/ James L. Forbes
    ----------------------------------           ------------------------------
    Title: Vice President - Corporate             Title: President and 
           Legal Counsel and Secretary                   Chief Executive Officer
                                                              



                                              FIRSTAR TRUST COMPANY

Attest:

By  /s/ William Caruso                        By   /s/ Suzanne Norman Barnes 
    -----------------------------------           ---------------------------
Title: Assistant Secretary                        Title:   Assistant Vice 
                                                           President



                                      -32-
<PAGE>   36






                                                           =====================
                                                                 EXHIBIT A
                                                           =====================






                           [Form of Right Certificate]


Certificate No. R-                                                _______ Rights


         NOT EXERCISABLE AFTER MAY 26, 2008 OR EARLIER IF REDEMPTION OR EXCHANGE
         OCCURS. THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01 PER RIGHT AND TO
         EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.


                                Right Certificate


                               BADGER METER, INC.

                  This certifies that ________________, or registered assigns,
is the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of May 26, 1998, and as such agreement may be
amended (the "Rights Agreement"), between Badger Meter, Inc., a Wisconsin
corporation (the "Company"), and Firstar Trust Company, a Wisconsin banking
corporation (the "Rights Agent"), to purchase from the Company at any time after
the Distribution Date (as such term is defined in the Rights Agreement) and
prior to 5:00 P.M., Milwaukee, Wisconsin time, on May 26, 2008, at the principal
office of the Rights Agent, or at the office of its successor as Rights Agent,
one fully paid nonassessable (except as otherwise provided by any corporation
law applicable to the Company) share of Common Stock, $1.00 par value ("Common
Shares"), of the Company, at a purchase price of $140.00 per Common Share (the
"Purchase Price"), upon presentation and surrender of this Right Certificate
with the Form of Election to Purchase duly executed. The number of Rights
evidenced by this Right Certificate (and the number of Common Shares which may
be purchased upon exercise hereof) set forth above, and the Purchase Price set
forth above, are the number and Purchase Price as of May 26, 1998, based on the
Common Shares as constituted at such date. As provided in the Rights Agreement,
the Purchase Price and the number of Common Shares which may be purchased upon
the exercise of the Rights evidenced by this Right Certificate are subject to
modification and adjustment upon the happening of certain events.

                  This Right Certificate is subject to all of the terms,
provisions and conditions of the Rights Agreement, which terms, provisions and
conditions are hereby incorporated herein by reference and made a part hereof
and to which Rights Agreement reference is hereby made for a full description of
the rights, limitations of rights, obligations, duties and immunities hereunder
of the Rights Agent, the Company and the holders of the Right Certificates.
Copies 


                               Exhibit A - Page 1
<PAGE>   37

of the Rights Agreement are on file at the principal executive offices of
the Company and the above-mentioned offices of the Rights Agent.

                  This Right Certificate, with or without other Right
Certificates, upon surrender at the principal office of the Rights Agent, may be
exchanged for another Right Certificate or Right Certificates of like tenor and
date evidencing Rights entitling the holder to purchase a like aggregate number
of Common Shares as the Rights evidenced by the Right Certificate or Right
Certificates surrendered shall have entitled such holder to purchase. If this
Right Certificate shall be exercised in part, the holder shall be entitled to
receive upon surrender hereof another Right Certificate or Right Certificates
for the number of whole Rights not exercised.

                  Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Certificate (i) may be redeemed by the Company at a redemption
price of $.01 per Right or (ii) may be exchanged in whole or in part for Common
Shares. The Board of Directors of the Company may, at its option, at any time
after any Person becomes an Acquiring Person, but prior to such Person's
acquisition of 50% or more of the outstanding Common Shares, exchange the Rights
evidenced by the Certificate for Common Shares, at an exchange ratio of one
Common Share per Right, subject to adjustment, as provided in the Rights
Agreement.

                  No fractional Common Shares will be issued upon the exercise
of any Right or Rights evidenced hereby, but in lieu thereof a cash payment will
be made, as provided in the Rights Agreement.

                  No holder of this Right Certificate shall be entitled to vote
or receive dividends or be deemed for any purpose the holder of the Common
Shares or of any other securities of the Company which may at any time be
issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any
of the rights of a shareholder of the Company or any right to vote for the
election of directors or upon any matter submitted to shareholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting shareholders (except as
provided in the Rights Agreement), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by this Right
Certificate shall have been exercised as provided in the Rights Agreement.

                               Exhibit A - Page 2
<PAGE>   38

                  This Right Certificate shall not be valid or obligatory for
any purpose until it shall have been countersigned by the Rights Agent.

                  WITNESS the facsimile signature of the proper officers of the
Company and its corporate seal. Dated as of ____________, ____.

ATTEST:                                    BADGER METER, INC.



____________________________________        By:_________________________________
                                               Title:   ________________________

Countersigned:



FIRSTAR TRUST COMPANY



By   ______________________________
     Authorized Signature



                               Exhibit A - Page 3
<PAGE>   39


                   [Form of Reverse Side of Right Certificate]


                               FORM OF ASSIGNMENT


                (To be executed by the registered holder if such
               holder desires to transfer the Right Certificate.)


           FOR VALUE  RECEIVED  _______________________________  hereby sells,  
assigns and  transfers  unto __________________________________________________
                  (Please print name and address of transferee)
_______________________________________________________________ this Right
Certificate, together with all right, title and interest therein, and does
hereby irrevocably constitute and appoint ___________________ Attorney, to
transfer the within Right Certificate on the books of the within-named Company,
with full power of substitution.


Dated:   ____________, ____


                                    _________________________________________
                                    Signature



Signature Guaranteed:

                  Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States.

                  The undersigned hereby certifies that the Rights evidenced by
this Right Certificate are not beneficially owned by an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).

                                     _________________________________________
                                     Signature

                               Exhibit A - Page 4
<PAGE>   40

            [Form of Reverse Side of Right Certificate -- continued]

                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                        exercise the Right Certificate.)

To BADGER METER, INC.:

                  The undersigned hereby irrevocably elects to exercise
____________________ Rights represented by this Right Certificate to purchase
the Common Shares issuable upon the exercise of such Rights and requests that
certificates for such Common Shares be issued in the name of:

Please insert social security
or other identifying number:  _____________________________

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security
or other identifying number:  _____________________________

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

Dated:   ____________, ____

                                             _____________________________
                                             Signature

Signature Guaranteed:

                  Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States.



                               Exhibit A - Page 5
<PAGE>   41


            [Form of Reverse Side of Right Certificate -- continued]

_______________________________________________________________________________
                  The undersigned hereby certifies that the Rights evidenced by
this Right Certificate are not beneficially owned by an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).


                                    ___________________________________________
                                    Signature

_______________________________________________________________________________

                                     NOTICE

                  The signature in the foregoing Forms of Assignment and
Election must conform to the name as written upon the face of this Right
Certificate in every particular, without alteration or enlargement or any change
whatsoever.

                  In the event the certification set forth above in the Form of
Assignment or the Form of Election to Purchase, as the case may be, is not
completed, the Company and the Rights Agent will deem the beneficial owner of
the Rights evidenced by this Right Certificate to be an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement) and such
Assignment or Election to Purchase will not be honored.


                               Exhibit A - Page 6

<PAGE>   42








                                                           =====================
                                                                 EXHIBIT B
                                                           =====================



                               BADGER METER, INC.

                          SUMMARY OF RIGHTS TO PURCHASE
                                  COMMON SHARES

                  On May 15, 1998, the Board of Directors of Badger Meter, Inc.
(the "Company") declared a dividend of one common share purchase right (a
"Right") for each outstanding share of common stock, $1.00 par value (the
"Common Shares"), of the Company. The dividend is payable on June 15, 1998 to
the shareholders of record on June 1, 1998 (the "Record Date"). Each Right
entitles the registered holder to purchase from the Company one Common Share at
a price of $140.00 per Common Share, subject to adjustment (the "Purchase
Price"). The description and terms of the Rights are set forth in a Rights
Agreement (the "Rights Agreement") between the Company and Firstar Trust
Company, as Rights Agent (the "Rights Agent").

                  Until the earlier to occur of (i) 10 days following a public
announcement that a person or group of affiliated or associated persons (other
than the Company, a subsidiary of the Company, an employee benefit plan of the
Company or a subsidiary, or the voting trust created by the Badger Meter voting
Trust Agreement dated as of June 1, 1953, as amended, the voting trust created
by the Badger Meter Officers Voting Trust Agreement dated as of December 18,
1991, as amended, or any trustee of such voting trusts (the "Voting Trusts and
Trustees")) (an "Acquiring Person") has acquired beneficial ownership of 20% or
more of the outstanding Common Shares (the "Common Shares Acquisition Date") or
(ii) 10 business days (or such later date as may be determined by action of the
Company's Board of Directors prior to such time as any person becomes an
Acquiring Person) following the commencement of, or announcement of an intention
to make, a tender offer or exchange offer the consummation of which would result
in the beneficial ownership by a person or group (other than the Company, a
subsidiary of the Company, an employee benefit plan of the Company or a
subsidiary or the Voting Trusts and Trustees) of 20% or more of the outstanding
Common Shares (the earlier of such dates being called the "Distribution Date"),
the Rights will be evidenced, with respect to any of the Common Share
certificates outstanding as of the Record Date, by such Common Share
certificate.

                  The Rights Agreement provides that, until the Distribution
Date, the Rights will be transferred with and only with the Common Shares. Until
the Distribution Date (or earlier redemption or expiration of the Rights), new
Common Share certificates issued after the Record Date, upon transfer or new
issuance of Common Shares, will contain a legend incorporating the Rights
Agreement by reference. Until the Distribution Date (or earlier redemption or
expiration of the Rights), the surrender for transfer of any certificates for
Common Shares outstanding as of the Record Date, even without such legend, will
also constitute the transfer of the Rights associated with the Common Shares
represented by such certificate. As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") 


                               Exhibit B - Page 1

<PAGE>   43

will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.

                  The Rights are not exercisable until the Distribution Date.
The Rights will expire on May 26, 2008 (the "Final Expiration Date"), unless the
Rights are earlier redeemed or exchanged by the Company, in each case as
described below.

                  The Purchase Price payable, and the number of Common Shares or
other securities or property issuable, upon exercise of the Rights are subject
to adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Common
Shares; (ii) upon the grant to holders of the Common Shares of certain rights or
warrants to subscribe for or purchase Common Shares at a price, or securities
convertible into Common Shares with a conversion price, less than the then
current market price of the Common Shares; or (iii) upon the distribution to
holders of the Common Shares of evidences of indebtedness or assets (excluding
regular quarterly cash dividends or dividends payable in Common Shares) or of
subscription rights or warrants (other than those referred to above).

                  The number of outstanding Rights and the number of Common
Shares issuable upon exercise of each Right are also subject to adjustment in
the event of a stock split of the Common Shares or a stock dividend on the
Common Shares payable in Common Shares or subdivisions, consolidations or
combinations of the Common Shares occurring, in any such case, prior to the
Distribution Date.

                  In the event that any person becomes an Acquiring Person (a
"Flip-In Event"), each holder of a Right will thereafter have the right to
receive upon exercise that number of Common Shares (or, in certain circumstances
cash, property or other securities of the Company or a reduction in the Purchase
Price) having a market value of two times the then current Purchase Price.
Notwithstanding any of the foregoing, following the occurrence of a Flip-In
Event all Rights that are, or (under certain circumstances specified in the
Rights Agreement) were, or subsequently become beneficially owned by an
Acquiring Person, related persons and transferees will be null and void.

                  In the event that, at any time following the Common Shares
Acquisition Date, (i) the Company is acquired in a merger or other business
combination transaction or (ii) 50% or more of its consolidated assets or
earning power are sold (the events described in clauses (i) and (ii) are herein
referred to as "Flip-Over Events"), proper provision will be made so that each
holder of a Right will thereafter have the right to receive, upon the exercise
thereof at the then current Purchase Price, that number of shares of common
stock of the acquiring company which at the time of such transaction will have a
market value of two times the then current Purchase Price.

                  With certain exceptions, no adjustment in the Purchase Price
will be required until cumulative adjustments require an adjustment of at least
1% in such Purchase Price. No 


                               Exhibit B - Page 2
<PAGE>   44

fractional shares will be issued. In lieu thereof, an adjustment in cash will be
made based on the market price of the Common Shares on the last trading day
prior to the date of exercise.

                  The Purchase Price is payable by certified check, cashier's
check, bank draft or money order or, if so provided by the Company, the Purchase
Price following the occurrence of a Flip-In Event and until the first occurrence
of a Flip-Over Event may be paid in Common Shares having an equivalent value.

                  At any time after a person becomes an Acquiring Person and
prior to the acquisition by such Acquiring Person of 50% or more of the
outstanding Common Shares, the Board of Directors of the Company may exchange
the Rights (other than Rights owned by any Acquiring Person which have become
void), in whole or in part, at an exchange ratio of one Common Share per Right
(subject to adjustment).

                  At any time prior to a person becoming an Acquiring Person,
the Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $.01 per Right (the "Redemption Price"). The redemption of
the Rights may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

                  Other than provisions relating to principal economic terms of
the Rights, the terms of the Rights may be amended by the Board of Directors of
the Company without the consent of the holders of the Rights, including an
amendment to lower the threshold for exercisability of the Rights from 20% to
not less than 10%, with appropriate exceptions for any person then beneficially
owning a percentage of the number of Common Shares then outstanding equal to or
in excess of the new threshold, except that from and after the Distribution Date
no such amendment may adversely affect the interests of the holders of the
Rights.

                  Until a Right is exercised, the holder thereof, as such, will
have no rights as a shareholder of the Company, including, without limitation,
the right to vote or to receive dividends.

                  A copy of the Rights Agreement has been filed with the
Securities and Exchange Commission as an Exhibit to a Registration Statement on
Form 8-A filed with respect to the Rights. A copy of the Rights Agreement is
available free of charge from the Company. This summary description of the
Rights does not purport to be complete and is qualified in its entirety by
reference to the Rights Agreement, which is hereby incorporated herein by
reference. 

                               Exhibit B - Page 3


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