Exhibit 21

NAME OF SUBSIDIARY	JURISDICTION OF INCORPORATION/ORGANIZATION
Abel Equipos, S.A. Abel Pumps, L.P. Abel Pumpen GmbH Abel GmbH & Co KG Acton Research Corporation Amot Controls Corporation Amot Controls Ltd. Amot Controls, S.A. Amot/Metrix Investment Company Amot Sales Corporation Amot Controls GmbH Antek Instruments, L.P. Antek Instruments GmbH Compressor Controls B.V. Compressor Controls Corporation S.r.l. Compressor Controls Corporation (an Iowa Corp) Compressor Controls Corporation (a Delaware    Corporation) d/b/a in Iowa as Compressor    Controls - CIS/EE) Cornell Pump Company Cornell Pump Manufacturing Corporation Cybor Corporation Fluid Metering, Inc. FTI Flow Technology, Inc. Gatan International, Inc. Gatan, Inc. Gatan Service Corporation Gatan Limited Gatan GmbH Hansen Technologies Corporation Hansen Technologies Ltd. Herzog-ISL SNC Integrated Designs L.P. ISL Holdings, S.A. ISL International, Inc. ISL Scientifique de Laboratoire - ISL, S.A. Metrix Instrument Co., L.P. Molecular Imaging Corporation Nippon Roper K.K. PAC GmbH Petrotech, Inc.		Spain Delaware Germany Germany Delaware Delaware United Kingdom Switzerland Delaware Delaware Germany Delaware Germany Netherlands Italy Iowa Delaware Delaware Delaware California Delaware Delaware Pennsylvania Pennsylvania Pennsylvania United Kingdom Germany Illinois United Kingdom France Delaware France Delaware France Delaware Arizona Japan Germany Delaware

Petrotech International, Inc.
Petrotech Batam
Petroleum Analyzer Company LP
Princeton Instruments Limited
Princeton Instruments SARL
Redlake Imaging Corporation
Roper Capital Deutschland GmbH
Roper Fundings KG
Roper Industries Deutschland GmbH
Roper Holdings, Inc.
Roper Industrial Products Investment Company
Roper Industries (Europe) Limited
Roper Industries Limited
Roper International, Inc.
Roper International Products, LTD
Roper Pump Company
Roper Scientific B.V.
Roper Scientific MASD, Inc.
Roper Scientific, Inc.
Roper Scientific GmbH
Turbocontroles de Venezuela
Uson L.P.
Walter Herzog GmbH Louisiana
Indonesia
Delaware
United Kingdom
France
Delaware
Germany
Germany
Germany
Delaware
Iowa
United Kingdom
United Kingdom
Delaware
Virgin Islands
Delaware
Netherlands
Delaware
Delaware
Germany
Venezuela
Delaware
Germany