A general purpose, versatile stainless steel 304 thermometer. Bi-metallic sensing element for reliable readings. Fixed centre back connection. Anti-parallax dial that reduces operator reading errors. 5 Year warranty. Welded stem. Application: industrial process, heating and air conditioning, ventilation and wastewater. Dial 3" aluminum with black markings, dish-shaped. Case: stainless steel 304 AISI. Recalibrator: standard. Ring: stainless steel 304 AISI. Sensing element: bi-metallic coil. Pointer: aluminum, painted black. Maximum operating pressure: 125 psi (861 kPa). Operating temperature: 75 percent of full scale value (recommended maximum). Ambient temperature: -58/248 degree fahrenheit. +/- 1 Percent accuracy. Enclosure rating IP68. Lens: Glass standard, hermetically sealed. Re-zero adjustment screws are standard on the 3" dial. Connection: 1/2" NPT standard. Temperature ranges: 0 degree F to 250 degree F. RoHS Compliant.