This H-B Instrument® DURAC® surface temperature thermometer has a temperature range of 50 to 750°F. It has a bi-metallic coil movement and an aluminum dial. Features a plastic case construction, with a double magnet mount. Ideal for pipes, griddles, and hot plates. Range: 50 to 750°F. Divisions: 10°. Construction: Plastic. Dial Material: Aluminium. Dial Diameter: 50mm (2 Inches). Mount Type: Double Magnet. 10/Case. H-B Instrument® #: 4002F.