Min/Max Dial Thermometer, Temperature Range 150 Degrees to 750 Degrees F/65.5 Degrees to 398.9 Degrees C, Stem Length 6 in, Dial Diameter 3 in, 1/2 in NPT, Back, Includes NIST-Traceable Certificate No, Housing Material 300 Stainless Steel, Lens Material Glass
eBay