b'Digital ThermometersDigital thermometers have a metal probe that can be inserted into the food and a digital screen that displays the temperature. Digital thermometers are recommended for measuring temperatures in thin foods or foods that must be measured quickly, such as hamburger patties.Metal Stem ThermometersMetal stem thermometers are sometimes also called dial thermometers. Thats because both types of thermometers use metal stems; it is the type of display that varies. Dial thermometers have a clock-like face, with hands that point to the foods temperature. They are recommended for measuring temperatures of thick foods. To use them correctly, insert the probe several inches into the food and leave it for at least 20 seconds. Dial thermometers wont give an accurate reading for thin foods like hamburger patties.49'