The Rubbermaid THC400DS dual-read stainless steel candy thermometer shows temperatures in both Fahrenheit and Celsius for ensuring proper food preparation temperature Its type 304 stainless steel is corrosion resistant and withstands high temperatures. It has a stem length of 5-3/4 inches and a temperature range of 100 to 400 degrees F/30 to 220 degrees C with temperature increments of 5 degrees F/2 degrees C. A straight edge on the dial helps keep the thermometer from rolling off tables, and the clear lens is shatter resistant with magnification. A protective sheath with pocket clip is included. This thermometer calibrates without the need for additional tools. It is dishwasher safe for convenience. 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.