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                                                                      EXHIBIT 21

                          SUBSIDIARIES OF AMETEK, INC.

<TABLE>
<CAPTION>
                                                                                                             PERCENTAGE OF VOTING
                    NAME OF SUBSIDIARY AND NAME                  STATE OR OTHER JURISDICTION OF             SECURITIES OWNED BY ITS
                    UNDER WHICH IT DOES BUSINESS                  INCORPORATION OR ORGANIZATION                 IMMEDIATE PARENT*
                    ----------------------------                 ------------------------------             -----------------------
<S>                                                              <C>                                        <C>
Advanced Measurement Technology, Inc. .....................................  Delaware................................  100%
AMELON, Inc. ..............................................................  Delaware................................  100%
       John Chatillon & Sons, Inc. ........................................  New York................................  100%
AMETEK (Bermuda), Ltd. ....................................................  Bermuda.................................  100%
AMETEK (Canada), Ltd. .....................................................  Canada..................................  100%
AMETEK (FSC), Inc. ........................................................  U. S. Virgin Islands....................  100%
AMETEK GmbH................................................................  Germany.................................  100%
AMETEK IMTSA, S.A. de C.V..................................................  Mexico..................................  100%
AMETEK Lamb Motores de Mexico, S.A. de C.V.................................  Mexico..................................  100%
AMETEK Mexicana, S.A.......................................................  Mexico..................................  100%
AMETEK Motors Holding, Inc. ...............................................  Delaware................................  100%
AMETEK Precision Instruments France SARL...................................  France..................................  100%
AMETEK Receivables Cop. ...................................................  Delaware................................  100%
AMETEK Thermal Systems, Inc. ..............................................  Delaware................................  100%
Chandler Instruments Company, L.L.C........................................  Texas...................................  100%
       Chandler Instruments GmbH...........................................  Austria.................................  100%
            Grabner Instruments Messtechnik GmbH...........................  Austria.................................  100%
                   Grabner Instruments Messtechnik Nfg GmbH
                   & Co. K.G...............................................  Austria.................................  100%
            Petrolab, L.L.C................................................  Delaware................................  100%
Controls Holding Corporation...............................................  Delaware................................  100%
       Patriot Sensors & Controls Corporation..............................  Delaware................................  100%
            Nihon Drexelbrook KK...........................................  Japan...................................  100%
EDAX Inc...................................................................  Delaware................................  100%
       EDAX Japan K.K......................................................  Japan...................................  100%
       EDAX B.V............................................................  Netherlands.............................  100%
       EDAX Ltd. ..........................................................  England.................................  100%
EMA Corp...................................................................  Delaware................................  100%
       Amekai (BVI), Ltd. .................................................  British Virgin Islands..................   50%
       AMETEK Do Brasil Ltd. ..............................................  Brazil..................................  100%
       AMETEK Motors Hong Kong Ltd.........................................  Hong Kong...............................  100%
       AMETEK Holdings B.V.................................................  Netherlands.............................  100%
            AMETEK Denmark A/S.............................................  Denmark.................................  100%
            AMETEK Elektomotory s.r.o......................................  Czech Republic..........................  100%
            AMETEK Italia S.r.l............................................  Italy...................................  100%
            AMETEK Singapore Private Ltd...................................  Singapore...............................  100%
                   Amekai Singapore Private Ltd............................  Singapore...............................   50%
                        Amekai Meter (Xiamen) Co., Ltd.....................  China...................................  100%
                   AmeKai Taiwan Co., Ltd..................................  Taiwan..................................   50%
                   AMETEK Motors Asia Private Ltd..........................  Singapore...............................  100%
                        AMETEK Motors (Shanghai) Co., Ltd. ................  China...................................  100%
       EMA Holdings UK Limited.............................................  England.................................  100%
            Airtechnology Holdings Limited.................................  England.................................  100%
                   Airtechnology Group Limited.............................  England.................................  100%
                        Aircontrol Technologies Limited....................  England.................................  100%
                        Airscrew Limited...................................  England.................................  100%
                            Airtechnology Pension Trustees Ltd. ...........  England.................................  100%
                            Thermol Control Company Ltd. ..................  England.................................  100%
                            Clifford Edwards Limited.......................  England.................................  100%
            AMETEK Holdings (UK) Ltd.......................................  England.................................  100%
                   Lloyd Instruments Ltd...................................  England.................................  100%
                        Lloyd Instruments S.A.S............................  France..................................  100%
</TABLE>

<PAGE>

<TABLE>
<S>                                                                          <C>                                       <C>
            AMETEK Precision Instruments (UK) Ltd..........................  England.................................  100%
            TH Acquisition Company Limited. ...............................  England
                   Taylor Hobson Holdings Limited..........................  England.................................  100%
                          Taylor Hobson Overseas Limited...................  England.................................  100%
                                 Taylor Hobson GmbH........................  Germany.................................  100%
                                 Taylor Hobson K Inc.......................  South Korea.............................  100%
                                 Taylor Hobson KK..........................  Japan...................................  100%
                                 Taylor Hobson Limited.....................  England.................................  100%
                                    Taylor Hobson, Inc. ...................  Delaware................................  100%
                                    Taylor Hobson Trustees Limited.........  England.................................  100%
                                 Taylor Hobson SARL........................  France.................................. 99.9%
                                 Taylor Hobson SpA.........................  Italy...................................  100%
       WEBAK, B.V. ........................................................  Netherlands.............................  100%
NCC Holdings, Inc..........................................................  Delaware................................  100%
       AMETEK National Controls Corporation................................  Delaware................................  100%
Prestolite Asia Ltd........................................................  Korea...................................   50%
Rotron Incorporated........................................................  New York................................  100%
Seiko EG&G Co. Ltd.........................................................  Japan...................................   49%
Solidstate Controls, Inc...................................................  Delaware................................  100%
       HDR Power Systems, Inc..............................................  Delaware................................  100%
       Solidstate Controls, Inc. de Argentina S.R.L........................  Argentina............................... 99.9%
       Solidstate Controls Mexico, S.A. de C.V.............................  Mexico.................................. 99.9%
</TABLE>

* Exclusive of directors' qualifying shares and shares held by nominees as
required by the laws of the jurisdiction of incorporation.
