Vintage Abbeon Cal, Inc. - Relative Humidity & Temperature Indicator Model M2A4B

Precalibrated Humidity and Temperature Indicator

Amprobe THWD-5 Relative Humidity and Temperature Meter

HUMIDITY AND TEMPERATURE INDICATOR CARDS 6203 LCC

Vaisala HMI-31 Humidity & Temperature Indicator

DICKSON TH300 TEMPERATURE, HUMIDITY AND DEW POINT INDICATOR

Precalibrated Humidity and Temperature Indicator with External Probe

Digi-Sense Precalibrated Humidity and Temperature Indicator with External Probe