PTC Instruments Surface Thermometers Model 311C Used

PTC Instruments Surface Thermometer 0F to 250 Degrees F Vintage Model 312F

Vintage PTC Instruments Model 575 F Surface Thermometer

PTC Model 309F Surface Temperature Thermometer Minus -50°F to Plus +250°F

Vintage PTC Instruments Surface Thermometer 0'F to 250'F Model 312F

PTC Instruments Surface Thermometer Model 310C -10°C to +150°C

PTC Instruments No 134AA Rapid Rwsponse Air Thermometers Estate Sale