PTC Instruments Model 312F Magnetic Surface Thermometer

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

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

PTC Instruments Vintage 313FRR Magnetic Industrial Rail Thermometer 0°F to 160°F

Vintage PTC Instruments Model 575 F Surface Thermometer

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

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

PTC Model 312F, 0-250 Degrees F Thermometer