EXHIBIT 21.1

NAME OF SUBSIDIARY	JURISDICTION OF INCORPORATION/ORGANIZATION
Abel Equipos, S.A		Spain
Abel Pumps, L.P.		Delaware
Abel Pumpen GmbH		Germany
Abel GmbH & Co KG		Germany
Acton Research Corporation		Delaware
Ai Cambridge Ltd.		United Kingdom
Amtech Systems Corporation		Delaware
Amtech Systems (Hong Kong), Ltd.		Hong Kong
Amtech World Corporation		Delaware
Amot Controls Corporation		Delaware
Amot Controls Ltd.		United Kingdom
Amot/Metrix Investment Company		Delaware
Amot Controls GmbH		Germany
Antek Instruments GmbH		Germany
CCC Services, Inc.		Delaware
Civco Holding, Inc.		Delaware
Compressor Controls B.V		Netherlands
Compressor Controls Corporation S.r.l		Italy
Compressor Controls Corporation (an Iowa Corp)		Iowa
Compressor Controls Corporation (a Delaware
Corporation) d/b/a in Iowa as Compressor
Controls - CIS/EE)		Delaware
Cornell Pump Company		Delaware
DAP Technologies Corp.		Delaware
DAP Technologies Limited		United Kingdom
DAP Technologies, Ltd.		Canada
DAP Technologies SARL		France
Fluid Metering, Inc.		Delaware
FTI Flow Technology, Inc.		Delaware
Gatan, Inc.		Pennsylvania
Gatan Service Corporation		Pennsylvania
Gatan GmbH		Germany
Hansen Technologies Corporation		Illinois
Hansen Technologies Europe GmbH		Germany
Inovonics Corporation		Colorado
Integrated Designs L.P.		Delaware
ISL Holdings, S.A.S		France
ISL Investissement SARL		France
ISL Scientifique de Laboratoire - ISL, S.A.S		France
K/S Roper Finance		Denmark
Logitech Limited		United Kingdom
Marumoto Struers KK		Japan
Media Cybernetics Inc.		Delaware
MedTech		Iowa
Metrix Instrument Co., L.P.		Delaware
Neptune Technology Group Inc.		Delaware
Neptune Technology Group (Canada) Ltd.		Canada
Neptune Technology Group Servicios S.de R.L. de C.V. Mexico
Neptune Technology Group Mexico S.de R.L. de C.V		Mexico
Nippon Roper K.K		Japan
Optical Insights, LLC		Arizona
PAC Denmark ApS		Denmark
PAC GmbH		Germany
Petroleum Analyzer Company LP		Delaware
Princeton Instruments Limited		United Kingdom
Qualitek Leaktest Ltd.		United Kingdom
Quantitative Imaging Corp.		Canada
Redlake MASD, LLC		Delaware
RI Insurance Limited		Bermuda
Roper Scientific SARL		France
Roper Canada Holdings, Inc.		Canada
Roper Canada Partners Inc.		Canada
Roper Capital Deutschland GmbH		Germany
Roper Engineering s.r.o		Czechoslovakia
Roper Fundings KG		Germany
Roper Georgia, Inc.		Delaware
Roper Marketing India Private Ltd.		India
Roper Industries Deutschland GmbH		Germany
Roper Holdings, Inc.		Delaware
Roper Holdings, Limited		United Kingdom
Roper Industrial Products Investment Company		Iowa
Roper Industries B.V		Netherlands
Roper Industries Denmark ApS		Denmark
Roper Industries (Europe) Limited		United Kingdom
Roper Industries Limited		United Kingdom
Roper Industries Manufacturing (Shanghai) Co. Ltd.		Shanghai
Roper International Products, LTD		Virgin Islands
Roper Luxenbourg S.a.r.l		Luxembourg
Roper Mex, L.P.		Delaware
Roper OOO		Russia
Roper Pump Company		Delaware
Roper Pump Europe GmbH		Germany
Roper Scientific B.V		Netherlands
Roper Scientific, Inc.		Delaware
Roper Scientific GmbH		Germany
Roper Scientific SAS		France
Roper Southeast Asia LLC		Delaware
Ropintassco Holdings, L.P.		Delaware
Ropintassco 1, LLC		Delaware
Ropintassco 2, LLC		Delaware
Ropintassco 3, LLC		Delaware
Ropintassco 4, LLC		Delaware
Ropintassco 5, LLC		Delaware
Ropintassco 6, LLC		Delaware
Ropintassco 7, LLC		Delaware
Struers A/S		Denmark
Struers GmbH		Germany
Struers Inc.		Delaware
Struers Limited		United Kingdom
Struers S.A.S		France
Struers (Shanghai) Trading Co., Ltd.		China
TC License Ltd.		Bermuda
TLP Holdings, LLC		Delaware
TransCore Atlantic, Inc.		Delaware
TransCore Commercial Services, Inc.		Delaware
TransCore Credit Corporation		Delaware
TransCore CNUS, Inc.		Delaware
TransCore, LP		Delaware