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

PTC Instruments Model 312F Magnetic Surface Thermometer

Vintage PTC Instruments Model 575 F Surface Thermometer

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

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

NOS! PTC INSTRUMENTS SURFACE THERMOMETER, 312FRR

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

PTC Instruments Surface Temperature Thermometer Model 575FM