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| Digital Control Systems, Inc. | |
| Control Co. | ||
| Jumo Process Control, Inc. | ||
| Portable Power Systems Inc. PPS | ||
| Love Controls (Division of Dwyer Instruments) | ||
| Ocean and Atmospheric Science, Inc. OAS - Optimum Applied Systems | ||
| Haewa | ||
| Chromalox | ||
| Artisan Controls | ||
| Durant Industrial Controls | ||
| Robertshaw Tennessee 2318 Kingston Pike - Knoxville, TN 37919 USA - - | ||
| IRCON Inc. 7300 N. Natchez Ave. - Niles, IL 60714 USA - - | ||
| Simpson Electric | ||
| TE Technology, Inc. | ||
| TPS Pty Ltd | ||
| Minco Products, Inc. | ||
| Desin Instruments S.A | ||
| Tempco Electric Heater Corp. | ||
| Hart Scientific | ||
| Thermo Electric Company | ||
| Texmate | ||
| Rhomberg - - - | ||
| HomAtion Systems | ||
| Johnson Controls | ||
| Megatron Electronics & Controls | ||
| Oven Industries, Inc. | ||
| Omron | ||
| Barber Colman Company | ||
| Lake Shore Cryotronics, Inc. | ||
| Selco Products Company | ||
| Frank W. Murphy Mfr. | ||
| ProAtion Systems | ||
| HiTECH Technologies, Inc. | ||
| Ametek National Controls Corp. (NCC) 1725 Western Drive - West Chicago, IL 60185 USA - - | ||
| Trytech, Inc. | ||
| CAL Controls, Inc. | ||
| Kidde / Fenwal Controls 400 Main Street - Ashland, MA 01721 USA - - | ||
| TECA ThermoElectric Cooling America Corporation | ||
| ESS Environmental Stress System, Inc. | ||
| Jenco Instruments Inc. | ||
| Alpha Omega Instruments Corp. | ||
| Partlow West | ||
| SELET SENSOR s.r.l. | ||
| Carlo Gavazzi / Dupline | ||
| Dawn Electronics, Inc. | ||
| Toho Electronics | ||
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