3" Bimetal Thermometer, 1/2" NPT Back Conn, 2.5" Stem Length, 0/140 F/C, .250" Diameter, Noshok, Mfr#: 30-110-025-0/140-F/C

Heavy-duty, industrial thermometer featuring a weather-resistant, tamper-proof case. ± 1-3/4 in. , 2 in. , 3 in. and 5 in. sizes – center back connection only. Highly sensitive bimetallic helix coil is heat-treated for stress relief, and silicone-coated to minimize pointer vibration and maximize heat transfer and response time. 360Deg groove around stem is a visual reference to show minimum immersion point.