.
                                                                               .
                                                                               .
                                  AS OF 3/1/03
                                                                      EXHIBIT 21

                          SUBSIDIARIES OF AMETEK, INC.





                                                             STATE OR OTHER
                                                             JURISDICTION OF               PERCENTAGE OF VOTING
   NAME OF SUBSIDIARY AND NAME                              INCORPORATION OR              SECURITIES OWNED BY ITS
   UNDER WHICH IT DOES BUSINESS                              ORGANIZATION                     IMMEDIATE PARENT*
   ----------------------------                              ------------                     -----------------
                                                                                    
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 Precision Instruments Europe 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 Precision Instruments (UK) Ltd.  ........................England...............................100%
AMETEK Receivables Cop..........................................Delaware..............................100%
EDAX Inc. ......................................................Delaware..............................100%
      EDAX Japan K.K............................................Japan.................................100%
      EDAX B.V. ................................................Netherlands...........................100%
      EDAX Ltd. ................................................England...............................100%
EMA Corporation ................................................Delaware..............................100%
      AMEKAI (BVI), Ltd.........................................British Virgin Islands.................50%
      AMETEK Do Brasil Ltda.....................................Brazil................................100%
      AMETEK Motors Hong Kong Ltd...............................Hong Kong.............................100%
      AMETEK Holdings B.V.......................................Netherlands...........................100%
          AMETEK Denmark A/S....................................Denmark...............................100%
          AMETEK Elektomotory CR 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%
      AMETEK Holdings (UK) Ltd..................................England...............................100%
          Lloyd Instruments Ltd.................................England...............................100%
                Lloyd Instruments S.A...........................France................................100%
      Neue Elektromotoren GmbH - Schleusingen...................Germany...............................100%
      WEBAK, B.V. ..............................................Netherlands...........................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%
Rotron Incorporated. ...........................................New York..............................100%
NCC Holdings, Inc...............................................Delaware..............................100%
      AMETEK National Controls Corporation......................Delaware..............................100%
Controls Holding Corporation....................................Delaware..............................100%
      Patriot Sensors & Controls Corporation....................Delaware..............................100%
          Nihon Drexelbrook Co., Ltd............................Japan.................................100%


                                  AS OF 3/1/03

                                                                                               
Prestolite Asia Ltd.............................................Korea .................................50%
Seiko EG&G Co. Ltd.. ...........................................Japan..................................49%
Solidstate Controls, Inc........................................Delaware..............................100%
      HDR Power Systems, Inc....................................Delaware..............................100%
      Solidstate Controls, Inc. de Argentina....................Argentina............................99.9%
      Solidstate Controls Mexico, S.A. de C.V...................Mexico...............................99.9%




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