The Rubbermaid THP220C stainless steel pocket thermometer has temperature readings in Fahrenheit for ensuring proper food preparation temperature. Its stainless steel construction resists scaling and corrosion. A user calibration nut is located on the back of the dial (wrench sold separately). A protective sheath with a pocket clip is included. It has a stem length of 5" and a temperature range of 0 to 220 degrees F in increments of 2 degrees F. It is certified to National Sanitation Foundation (NSF) standards for food safety. Food service thermometers are used to monitor the temperatures of food or of food preparation and storage environments, such as ovens, freezers, or refrigerators, in commercial or home kitchens. The thermometers can be mechanical, with dials, or electronic, with digital displays, to show temperature readings in Fahrenheit, Celsius, or both. Some dials have markings that indicate optimal cooking temperature zones for meats, candy, or dough. Thermometers are commonly made of stainless steel (mechanical) or plastic with stainless steel probes (digital).Rubbermaid manufactures cleaning, organizing, and material handling products for commercial, medical, and industrial applications. The company, founded in 1933, is headquartered in Huntersville, NC.