HYGROMETER / THERMOMETER Humidity and Temp - Dial w/White Face & Stainless steel case
Humidity and Temperature dial with white face and stainless steel case.
The humidity is sensed by a Durotherm element that is a synthetic hygroscopic fiber that expands and contracts in response to the moisture in the air. The temperature is indicated by the actuation of a bimetallic spring which transmits changes by expansion and contraction.
NIST Certification - $95 (order using item # NIST)