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

PTC Instruments Model 312F Magnetic Surface Thermometer

Pipe Thermometer Temperature Gauge Measuring Clip on Pipe Clamp Hot Water Pipes

PTC Instruments Surface Thermometer 0'F to 250'F Model 486F New

PTC Instruments 309F Surface Thermometer Minus 50-250F Degrees Vintage Model

Vintage PTC Instruments Model 575 F Surface Thermometer

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

Pipe / Surface Thermometer, 0-500F, 2" Face, with Mounting Springs