BOGERDACK Bimetal Thermometer, 0-250°F/-20-120℃, 2.5" Dial Size, 1/2" Connection Thread, Brass Stem with Total Length of 2.3" Back Mount, Accuracy 2%, for hot Water, boilers, and Pipes

["High-Precision Dual Scale Reading: Features a 2.5-inch dial face with clear 0-250°F / -20-120°C dual scale markings for quick, accurate temperature monitoring of water and other non-corrosive media.","Durable 1/2\" NPT Brass Connection: Equipped with a standard 1/2\" NPT threaded brass connection for secure, leak-proof installation. Suitable for stable operation on pipes, tanks, or industrial equipment.","Back Mount Design: Center back mount configuration allows compact installation on tight-fit equipment or panels, keeping the gauge flush against the mounting surface for easy reading.","Wide Application for Water & Hydronic Systems: Ideal for measuring water temperature in HVAC systems, boilers, hot water pipes, pumps, and industrial machinery. Reliable performance for daily monitoring.","NOTE: To prevent damage to the brass stem, DO NOT use this thermometer with media that is corrosive to brass."]