The food safety branch of the USDA advises cooking ground meat patties to an internal temperature of 160oF to assure a safely cooked product. Tests have shown the color of the patty is no indication of doneness. A thermometer must be used to assure that the correct temperature has been reached. The DBBQ212 is one of the best thermometers to use because the temperature is measured at the bottom. Measurement Range: +32 to +212°F/0 to +100°C. One-button operation-big digit- easy to see day or night. The stainless fork tines and sure-grip handle let you lift up to 8 lbs. Aaccurate temperature readings for thin cuts of meat, fish or poultry.