Thread-Mounted Digital Thermometer, -75 Degrees to 750 Degrees F, Stem Length 4 in, 1/2 in NPT, Bottom, Includes NIST-Traceable Certificate Yes, 5.04 in dia Display with 4-Digit Backlit LCD Display – 1 in Digit Height, 304 Stainless Steel Housing with Glass Lens and 316 Stainless Steel Stem, (1) 3.6V 1/2 AA Lithium Battery, Digital, Industrial Digital Thermometer