Exhibit 21.1
| Name of Subsidiary | Jurisdiction of Incorporation/Organization |
| 3089554 Nova Scotia ULC | Canada |
| Abel Equipos, S.A. | Spain |
| Abel GmbH & Co KG | Germany |
| Abel Pumpen GmbH | Germany |
| Abel Pumps, L.P. | Delaware |
| AC Analytical Control Services B.V | Netherlands |
| AC Analytical Controls B.V. | Netherlands |
| AC Analytical Controls Holding B.V. | Netherlands |
| Acton Research Corporation | Delaware |
| Alpha Holdings of Delaware 1 LLC | Delaware |
| Alpha Holdings of Delaware 11 LLC | Delaware |
| Alpha Technologies B.V. | Netherlands |
| Alpha Technologies GmbH | Germany |
| Alpha Technologies Japan LLC | Delaware |
| Alpha Technologies, s.r.o. | Czech Republic |
| Alpha Technologies Services LLC | Delaware |
| Alpha Technologies U.K. | United Kingdom |
| Alpha UK Holdings LLC | Delaware |
| Amot Controls Corporation | Delaware |
| Amot Controls GmbH | Germany |
| Amot/Metrix Investment Company, Inc. | Delaware |
| Amphire Solutions, Inc. | Delaware |
| Amtech Systems (Hong Kong) Limited | Hong Kong |
| Amtech Systems, LLC | Delaware |
| Amtech World Corporation | Delaware |
| Ascension Technology Corporation | Delaware |
| Black Diamond Advanced Technology, LLC | Delaware |
| Cambridge Viscosity, Inc. | Delaware |
| CBORD Holdings Corp. | Delaware |
| Civco Holding, Inc. | Delaware |
| Civco Medical Instruments Co., Inc. | Iowa |
| Civco Medical Solutions B.V. | Netherlands |
| Compressor Controls (Beijing) Corp. Ltd. | China |
| Compressor Controls Corporation B.V. | Netherlands |
| Compressor Controls Corporation | Iowa |
| Compressor Controls Corporation Middle East | Delaware |
| Compressor Controls Corporation S.r.l. | Italy |
| Compressor Controls Mauritius Ltd. | Mauritius |
| Compressor Controls Pty Ltd. | Australia |
| Cornell Pump Company | Delaware |
| Cornell Pump Europe GmbH | Germany |
| DAP Technologies Corp. | Delaware |
| DAP Technologies Limited | United Kingdom |
| DAP Technologies SARL | France |
| DAP Technologies Ltd. | Canada |
| Dynamic Instruments, Inc. | California |
| Dynisco (UK) Limited | United Kingdom |
| Dynisco Enterprises GmbH | Germany |
| Dynisco Enterprises, LLC | Delaware |
| Dynisco Europe GmbH | Germany |
| Dynisco Hong Kong Holdings, Limited | Hong Kong |
| Dynisco Holding GmbH | Germany |
| Dynisco Instruments LLC | Delaware |
| Dynisco Instruments SARL | France |
| Dynisco LLC | Delaware |
| Dynisco Parent, Inc. | Delaware |
| Dynisco S.r.l. | Italy |
| Dynisco spol, s.r.o. | Czech Republic |
| Dynisco –Viatran (M) Sdn Bhd | Malaysia |
| Dynisco Viatran LLC | Delaware |
| Dynisco-Viatran Instruments Sdn Bhd | Malaysia |
| Fluid Metering, Inc. | Delaware |
| FTI Flow Technology, Inc. | Delaware |
| Gatan GmbH | Germany |
| Gatan Service Corporation | Pennsylvania |
| Gatan, Inc. | Pennsylvania |
| Getloaded Corporation | Delaware |
| Hansen Technologies Corporation | Illinois |
| Hansen Technologies Europe GmbH. | Germany |
| Harbour Holding Corp. | Delaware |
| Hardy Process Solutions | California |
| Horizon Software International, LLC | Georgia |
| Imager Labs | California |
| Inovonics Corporation | Colorado |
| Instill Corporation | Delaware |
| Integrated Designs L.P. | Delaware |
| Integrated Design Tools, Inc. | Florida |
| IntelliTrans Canada Ltd. | Canada |
| IntelliTrans Limited | United Kingdom |
| IntelliTrans, LLC | Delaware |
| Intellitrans Sweden AB | Sweden |
| ISL Finance | France |
| ISL Holding SNC | France |
| ISL Scientifique de Laboratoire - ISL, S.A.S. | France |
| IT Canada Holdings, LLC | Delaware |
| iTradenetwork, Inc. | Delaware |
| iTradenetwork Limited | United Kingdom |
| K/S Roper Finance | Denmark |
| Law 1059 Limited | United Kingdom |
| Link Logistics Holding LLC | Delaware |
| Logitech Limited | United Kingdom |
| Lumenera Corporation | Canada |
| Marumoto Struers KK | Japan |
| Media Cybernetics Inc. | Delaware |
| MEDTEC, Inc. | Iowa |
| Metrix Instrument Co., L.P. | Delaware |
| NDI Europe GmbH | Germany |
| Neptune Technology Group (Canada) Limited | Canada |
| Neptune Technology Group Inc. | Delaware |
| Neptune Technology Group Mexico S.de R.L. de C.V. | Mexico |
| Neptune Technology Group Servicios S.de R.L. de C.V. | Mexico |
| Nippon Roper K.K. | Japan |
| Northern Digital Inc. | Canada |
| Off-Campus Advantage, LLC | Delaware |
| PAC Denmark ApS | Denmark |
| PAC GmbH | Germany |
| PAC Instruments Asia Pte. Ltd. | Singapore |
| Petroleum Analyzer Company L.P. | Delaware |
| Quantitative Imaging Corporation | Canada |
| Redlake MASD, LLC | Delaware |
| RI Marketing India Private Limited | India |
| RMT, Inc | Arizona |
| Roda Deaco Valve, Inc. | Canada |
| Roper Brasil Comercio E Promocano De Produtos E Servicos LTDA | Brasil |
| Roper Canada Holdings, Inc. | Canada |
| Roper Canada Partners Inc. | Canada |
| Roper Capital Deutschland GmbH | Germany |
| Roper Engineering s.r.o. | Czech Republic |
| Roper Europe GmbH | Germany |
| Roper Fundings Deutschland GmbH & Co. KG | Germany |
| Roper Georgia, Inc. | Delaware |
| Roper Germany GmbH | Germany |
| Roper Germany GmbH & Co., KG | Germany |
| Roper Holdings, Inc. | Delaware |
| Roper Holdings Limited | United Kingdom |
| Roper Industrial Products Investment Company | Iowa |
| Roper Industries L.P. | Canada |
| Roper Industries UK Limited | United Kingdom |
| Roper Industries B.V. | Netherlands |
| Roper Industries Denmark ApS | Denmark |
| Roper Industries Deutschland GmbH | Germany |
| Roper Industries Limited | United Kingdom |
| Roper Industries Manufacturing (Shanghai) Co. Ltd. | China |
| Roper Industries Mauritius Ltd. | Mauritius |
| Roper International Holding, Inc. | Delaware |
| Roper LLC | Russia |
| Roper Luxembourg Finance S.a.r.l. | Luxembourg |
| Roper Luxembourg Holdings S.a.r.l. | Luxembourg |
| Roper Luxembourg S.a.r.l. | Luxembourg |
| Roper-Mex, L.P. | Delaware |
| Roper NT LLC | Delaware |
| Roper Pump Company | Delaware |
| Roper Scientific B.V. | Netherlands |
| Roper Scientific GmbH | Germany |
| Roper Scientific SAS | France |
| Roper Scientific, Inc. | Delaware |
| Roper Southeast Asia LLC | Delaware |
| Roper UK, Ltd. | United Kingdom |
| 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 |
| Ropintassco Holdings, L.P. | Delaware |
| Shanghai Roper Industries Trading Co., Ltd. | China |
| Sinmed Holding International B.V. | Netherlands |
| Struers (Shanghai) International Trading Ltd. | China |
| Struers A/S | Denmark |
| Struers GmbH | Germany |
| Struers Inc. | Delaware |
| Struers Limited | Canada |
| Struers Ltd. | United Kingdom |
| Struers SAS | France |
| Student Advantage, LLC | Delaware |
| Sunquest Europe Limited | United Kingdom |
| Sunquest Holdings, Inc. | Delaware |
| Sunquest Information Systems, Inc. | Pennsylvania |
| Sunqust Information Systems (Europe) Limited | United Kingdom |
| Sunquest Information Systems Canada, Inc. | Canada |
| Sunquest Information Systems (India) Private Limited | India |
| Sunquest Information Systems (International) Limited | United Kingdom |
| Technolog Group Limited | United Kingdom |
| Technolog Holdings Ltd. | United Kingdom |
| Technolog Limited | United Kingdom |
| Technolog S.a.r.l | France |
| The CBORD Group, Inc. | Delaware |
| TLP Holdings, LLC | Delaware |
| TransCore Atlantic, Inc. | Delaware |
| TransCore CNUS, Inc. | Delaware |
| TransCore Commercial Services, LLC | Delaware |
| TransCore Holdings, Inc. | Delaware |
| TransCore ITS, LLC | Delaware |
| TransCore ITS Australia Pty Ltd. | Australia |
| TransCore Link Logistics Corporation | Canada |
| TransCore Nova Scotia Corporation | Canada |
| TransCore Partners, LLC | Delaware |
| Transcore Quebec Corporation Inc. | Canada |
| TransCore, LP | Delaware |
| TransCore Transportation Systems Mauritius Private Limited | Mauritius |
| TransCore Transportation Solutions India Private Limited | India |
| Trinity Integrated Systems Limited | United Kingdom |
| United Controls Group, Inc. | Ohio |
| United Toll Systems, Inc. | Delaware |
| Uson L.P. | Delaware |
| Uson Limited | United Kingdom |
| Utilitec Limited | United Kingdom |
| Utilitec Services Limited | United Kingdom |
| Utility Data Services Limited | United Kingdom |
| Verathon Inc. | Washington |
| Verathon Holdings (Delaware) Inc. | Delaware |
| Verathon Medical Inc. | Washington |
| Verathon Medical (Austrailia) Pty Limited | Australia |
| Verathon Medical (Canada) ULC | Canada |
| Verathon Medical (Europe) B.V. | Netherlands |
| Verathon Medical (France) S.a.r.l. | France |
| Verathon Medical (Hong Kong) Limited | Hong Kong |
| Verathon Medical (Japan) K.K. | Japan |
| Verathon Medical (UK) Ltd. | United Kingdom |
| Viastar Services, LP | Texas |
| Viatran Corporation | New York |
| Walter Herzog GmbH | Germany |
| Zetec, Inc. | Washington |
| Zetec France | France |
| Zetec Korea, Inc. | Delaware |
| Zetec Rental LLC | Delaware |
| Zetec Services, Inc. | Delaware |
| Zetec (Shanghai) Non-Destructive Equipment Co., Ltd. | China |