Easy-to-read 2.5" Dial with Glass Lens -20 to 60 Degrees Celsius, Measures Approximate Surface Temperature, Accurate to ±2.4C Magnetically Attaches to Any Ferrous Metal Surface 1-year Limited Warranty The REOTEMP S1-C32 Magnetic Analog Surface Thermometer is a quality thermometer for use on ovens, boilers, process lines, motors or similar applications where a magnetically attached thermometer is needed. The thermometer features a glass lens that will not yellow over time and an easy-to-read 2.5" dial. The maximum rated temperature is 60C with an accuracy of ±3% full scale. This unit comes with a 1-year limited warranty.