Vigilant Aircraft Hygrometer

Vigilant Aircraft Hygrometer

The Edgetech Instruments Model 137 Vigilant Aircraft Hygrometer is a rugged, shock mounted military qualified instrument used for the primary measurement of dew point in flight or in installations with existing flow, such as wind tunnels.
It features a miniature remote dew point sensor employing a platinum resistance thermometer, and has 15 feet of interconnecting cable to the control unit. Precision calibration units for the linear analog outputs are included.

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