| Gay Engineering and Sales Co Inc
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| Manufacture of thermocouples, RTD's and accessories. Multi-point and furnace tubeskin temperature measurement. |
| GE Thermometrics India Pvt Ltd
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| A manufacturer and exporter of thermistors based in India. |
| Hampshire Controls Corp
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| Manufacturer of temperature monitors, controls, alarms, data logging systems, motor and air speed controls, and liquid level detection equipment. |
| Heraeus Sensor Nite
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| Production of platinum temperature sensors of thin-film technology. |