The DuraChoice T3D60500 bi-metal thermometer has a 3" dial size, with a 6" center back mounted stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 50 to 500 F (10 to 260 C). Dual scale shows Fahrenheit/Celsius. Made for tight spaces and OEM applications. Calibration dial ensures accuracy.