| 1 | FPI Sensors Inc. | | USA |
| 2 | Omega Engineering Inc. | | USA |
| 3 | Mercury Displacement Industries Inc. (MDI Inc.) | | USA |
| 4 | Stevens Water Monitoring Systems Inc. | | USA |
| 5 | Nolta Inc | | USA |
| 6 | Digital Control Corporation | | USA |
| 7 | Gems Sensors & Controls | | USA |
| 8 | Transicoil LLC | | USA |
| 9 | Viatran | | USA |
| 10 | Campbell Scientific Inc. | | USA |
| 11 | Schneider Electric | | USA |
| 12 | Tecsis LP | | USA |
| 13 | USEMCO | | USA |
| 14 | Argon St | | USA |
| 15 | Stellar Technology Inc. | | USA |
| 16 | PSI- Tronix | | USA |
| 17 | Consero Inc. | | USA |
| 18 | MicroStrain a LORD Company | | USA |
| 19 | Turck Inc. | | USA |
| 20 | Ocean Sensor Systems Inc. | | USA |
| 21 | Barben Analyzer Technology | | USA |
| 22 | O-Navi LLC | | USA |
| 23 | PICS INC | | USA |
| 24 | F.W. Webb Company Thermoplastic Piping Div. | | USA |
| 25 | Sentran Corporation | | USA |
| 26 | IFM Efector Inc. | | USA |
| 27 | Siemens Process Instrumentation | | USA |
| 28 | Endress+Hauser | | USA |
| 29 | Motor Protection Electronics (MPE) | | USA |
| 30 | RDP Electrosense Inc. | | USA |
| 31 | ATI Industrial Automation | | USA |
| 32 | Devar Inc. | | USA |
| 33 | Fargo Controls Inc. | | USA |
| 34 | Sensonetics Inc. | | USA |
| 35 | KROHNE Inc. | | USA |
| 36 | Telemecanique Sensors | | USA |
| 37 | Sensor Systems LLC | | USA |
| 38 | pHionics Inc. | | USA |
| 39 | Taber Industries | | USA |
| 40 | Bokam Engineering Inc. | | USA |
| 41 | Wasco Switches and Sensors | | USA |
| 42 | Automation Products Group Inc. (APG SENSORS) | | USA |
| 43 | Siemens Corporation | | USA |
| 44 | Madison Company | | USA |
| 45 | Piezo Technologies | | USA |
| 46 | NovaLynx Corporation | | USA |
| 47 | Cooper Instruments & Systems a Group-4 Company | | USA |
| 48 | 2G Engineering LLC | | USA |
| 49 | Meggitt Sensing Systems – Wilcoxon Research | | USA |
| 50 | H-O-H Water Technology Inc. | | USA |
