| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Davis Instruments | USA | |
| 2 | Intermas US LLC | USA | |
| 3 | DeFelsko Corp. | USA | |
| 4 | Edgetech Instruments Inc. | USA | |
| 5 | AMETEK Process Instruments | USA | |
| 6 | Mac Instruments | USA | |
| 7 | Innovative Sensor Technology USA Division | USA | |
| 8 | CS Instruments USA | USA | |
| 9 | STYLAIR | USA | |
| 10 | Nova Analytical Systems | USA | |
| 11 | Shaw Moisture Meters | USA | |
| 12 | AVTECH Software Inc. | USA | |
| 13 | Roscid Technologies | USA | |
| 14 | ENMET | USA | |
| 15 | VPInstruments | USA | |
| 16 | COSA Xentaur Corp. | USA | |
| 17 | Michell Instruments Inc. | USA | |
| 18 | Kestrel Instruments | USA | |
| 19 | Lufft USA Inc. | USA | |
| 20 | Ohmic Instruments Inc | USA | |
| 21 | Belimo Americas (USA) | USA | |
| 22 | Buck Research | USA | |
| 23 | PICS INC | USA | |
| 24 | MEECO Inc. | USA | |
| 25 | Vaisala Inc. | USA | |
| 26 | ENOTEC Inc. | USA | |
| 27 | Newport Scientific Inc. | USA | |
| 28 | Phymetrix Inc. | USA |
