Exhibit 21

SUBSIDIARIES OF AMETEK, INC.

AS OF DECEMBER 31, 2010

		Percentage of voting
	State or other jurisdiction of	securities owned by its
Name of Subsidiary and name under which it does business	incorporation or organization	immediate parent*
Advanced Measurement Technology, Inc.	Delaware		100	%
AMETEK (Bermuda), Ltd.	Bermuda		100	%
AMETEK Canada, LLC	Delaware		100	%
AMETEK Canada 1 ULC	Canada		100	%
AMETEK Canada 2 ULC	Canada		100	%
AMETEK Canada Limited Partnership	Canada		100	%
AMETEK Lamb Motores de Mexico, S.A. de C.V.	Mexico		100	%
AMETEK Motors Holding, Inc.	Delaware		100	%
AMETEK Receivables Corp.	Delaware		100	%
AMETEK Thermal Systems, Inc.	Delaware		100	%
Chandler Instruments Company, L.L.C	Texas		100	%
Grabner Instruments Messtechnik GmbH	Austria		100	%
Petrolab, L.L.C	Delaware		100	%
Controls Holding Corporation	Delaware		100	%
Patriot Sensors & Controls Corporation	Delaware		100	%
Drake Air, Inc.	Oklahoma		100	%
EDAX Inc.	Delaware		100	%
EDAX B.V.	Netherlands		100	%
Elgar Holdings, Inc.	Delaware		100	%
AMETEK Programmable Power, Inc.	Delaware		100	%
EMA Corp.	Delaware		100	%
Amekai (BVI), Ltd.	British Virgin Islands		50	%
AMETEK Advanced Industries, Inc.	Delaware		100	%
AMETEK Aerospace & Defense, Inc.	Delaware		100	%
AMETEK Ameron, LLC	Delaware		100	%
Southern Aero Partners, Inc.	Oklahoma		100	%
AMETEK Aircraft Parts & Accessories, Inc.	Delaware		100	%
AMETEK CPR RUSSIA, Inc.	Delaware		100	%
AMETEK Do Brasil Ltda.	Brazil		100	%
AMETEK Grundbesitz GmbH	Germany		100	%
AMETEK Haydon Kerk, Inc.	Delaware		100	%
Tritex Corporation	Delaware		100	%
Haydon Motion Europe S.A.R.L	France		100	%
Haydon Linear Motors (Changzhou) Co., Ltd.	China		100	%
Haydon Kerk Motion Solutions, Inc.	Massachusetts		100	%
Linex (Nanjing) Electromechanics, Ltd.	China		19	%
AMETEK HSA, Inc.	Delaware		100	%
AMETEK International C.V.	Netherlands		99.9	%
AMETEK Holdings B.V.	Netherlands		100	%
AMETEK Denmark A/S	Denmark		100	%
AMETEK Italia S.r.l.	Italy		100	%
AMETEK Europe L.L.C.	Delaware		100	%
AMETEK UK Limited Partnership	United Kingdom		99.998	%
AMETEK European Holdings Limited	United Kingdom		100	%
AMETEK Elektromotory, s.r.o.	Czech Republic		99.97	%
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 Commercial Enterprise Shanghai	China		100	%
AMETEK Instruments India Private Ltd.	India		100	%
AMETEK Motors Asia Pte., Ltd.	Singapore		100	%

		Percentage of voting
	State or other jurisdiction of	securities owned by its
Name of Subsidiary and name under which it does business	incorporation or organization	immediate parent*
AMETEK Motors (Shanghai) Co., Ltd.	China	100	%
EMA Holdings UK Limited	England	100	%
AEM Limited	England	100	%
Aeromedic Innovations Ltd (Dormant)	England	100	%
Aviation Windings Ltd. (Dormant)	England	100	%
Airtechnology Holdings Ltd.	England	100	%
Airscrew Ltd.	England	100	%
Aircontrol Technologies Ltd. (Dormant)	England	100	%
AMETEK Airtechnology Group Ltd.	England	100	%
Airtechnology Pension Trustees Ltd.	England	100	%
AMETEK Holdings (UK) Ltd.	England	100	%
Lloyd Instruments Ltd.	England	100	%
AMETEK SAS	France	63	%
Solartron Instruments Ltd. (Dormant)	England	100	%
OOO “AMETEK”	Russia	99	%
AMETEK Precision Instruments (UK) Ltd.	England	100	%
AMETEK Russia (UK) Ltd.	England	100	%
Land Instruments International Ltd.	England	100	%
AMETEK Material Analysis Holdings GmbH	Germany	100	%
AMETEK Holdings SARL	France	74	%
Antavia SAS	France	100	%
Financiere CAMECA (SAS)	France	100	%
Micro Analyse Instruments SAS	France	100	%
CAMECA SAS	France	100	%
CAMECA Instruments, Inc.	New York	100	%
CAMECA Korea Co., Ltd.	Korea	100	%
CAMECA Taiwan Corp. Ltd.	Taiwan	100	%
CAMECA UK Ltd.	England	100	%
CAMECA GmbH	Germany	100	%
SPECTRO Analytical Instruments GmbH	Germany	100	%
SPECTRO Analytical Instruments (Asia-Pacific) Ltd.	Hong Kong	100	%
SPECTRO Analytical Instruments, Inc.	Delaware	100	%
SPECTRO Analytical Instruments (Pty). Ltd.	South Africa	100	%
SPECTRO Analytical UK Limited	England	100	%
Muirhead Aerospace Ltd.	England	100	%
Traxsys Input Products Ltd. (Dormant)	England	100	%
Norcroft Dynamics Ltd. (Dormant)	England	100	%
TH Acquisition Company Ltd.	England	100	%
Taylor Hobson Holdings Ltd.	England	100	%
Taylor Hobson Overseas Ltd	England	100	%
AMETEK GmbH	Germany	62	%
AMETEK Nordic AB	Sweden	100	%
AMETEK Kabushiki Kaisha	Japan	100	%
AMETEK S.r.l.	Italy	100	%
Taylor Hobson K Inc.	South Korea	100	%
Taylor Hobson Ltd.	England	100	%
Solartron Metrology Ltd.	England	100	%
Solartron Metrology 2001 Ltd.	England	100	%
Taylor Hobson, Inc.	Delaware	100	%
Taylor Hobson Trustees Limited	England	100	%
AMETEK Land, Inc.	Delaware	100	%

		Percentage of voting
	State or other jurisdiction of	securities owned by its
Name of Subsidiary and name under which it does business	incorporation or organization	immediate parent*
AMETEK Motors Hong Kong Ltd.	Hong Kong		100	%
AMETEK Precitech, Inc.	Delaware		100	%
AMETEK TSE, Inc.	Delaware		100	%
TSE Acquisition Corporation	Delaware		100	%
Technical Services for Electronics, Inc.	Minnesota		100	%
AMETEK VIS-K, Inc.	Delaware		100	%
Atlas Material Holdings Corporation	Delaware		100	%
Atlas Material Testing Technology L.L.C.	Delaware		100	%
Atlas Netherlands AcquisitionCo Coöperatief U.A.	Netherlands		99.99	%
Atlas Material Testing Technology GmbH	Germany		100	%
MTL Light Solutions GmbH	Germany		100	%
Atlas Material Testing Technology BV	Netherlands		100	%
Atlas Material Testing Technology (India) Private Limited	India		100	%
Atlas Material Testing Technology Limited	England		100	%
MCG Acquisition Corporation	Minnesota		100	%
HCC Industries, Inc.	Delaware		100	%
AMETEK Ceramics, Inc.	Delaware		100	%
Glasseal Products, Inc.	New Jersey		100	%
Sealtron Acquisition Corp.	Delaware		100	%
Sealtron, Inc.	Delaware		100	%
HCC Aegis, Inc.	Delaware		100	%
HCC Industries International	California		100	%
HCC Machining Co., Inc.	Delaware		100	%
Hermetic Seal Corporation	Delaware		100	%
Norfolk Avon Realty Trust (Dormant)	Massachusetts		100	%
HP Acquisition Corp.	Delaware		100	%
Hamilton Precision Metals, Inc.	Delaware		100	%
Hamilton Precision Metals of Delaware, Inc.	Delaware		100	%
KBA Holding, Inc.	Delaware		100	%
KBA Enterprises, Inc.	Delaware		100	%
Reading Alloys, Inc.	Pennsylvania		100	%
RAI Enterprises, Inc.	Delaware		100	%
NCC Holdings, Inc.	Delaware		100	%
AMETEK National Controls Corporation	Delaware		100	%
NewAge Testing Instruments, Inc.	Pennsylvania		100	%
Rotron Incorporated	New York		100	%
AMETEK Technical & Industrial Products, Inc.	Minnesota		51.9	%
Wuxi MCG Trading Company	China		100	%
SCPH Holdings, Inc.	Delaware		100	%
AMETEK SCP, Inc.	Rhode Island		100	%
AMETEK SCP (Barrow) Limited	England		100	%
Seiko EG&G Co. Ltd.	Japan		49	%
Solidstate Controls, LLC	Delaware		100	%
HDR Power Systems, LLC	Delaware		100	%
Solidstate Controls, Inc. de Argentina S.R.L.	Argentina		90	%
Solidstate Controls Mexico, S.A. de C.V.	Mexico		99.9	%
Vision Research, Inc.	Delaware		100	%
Vision Research Europe B.V.	Netherlands		100	%
Vision Research Limited	England		100	%
Vision Research srl	Romania		100	%

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