A candy thermometer is used to measure the temperature of the candy while it is cooking. Unlike other cooking thermometers, that only read high temperatures, these thermometers read from around 50 °F up to or over 400 °F. This is because candy needs to cool down a certain amount before it can be handled and molded. Candy thermometers are meant to be hung in the candy during the entire cooking process. Some models have a loop at the top though which a chain or string is passed, so the thermometer end can hang down into the pot. Other models have a clip attached to the stem or dial so it can be clipped to the pot’s side. These thermometers can also be used to measure the temperature of fryer oil. Most fry pots have a built-in thermostat that regulates the temperature, but there is not always a temperature display. Candy thermometers are usually around 12 inches or more in length, so they are long enough to reach the middle of the oil while keeping the worker’s hands safe from burns.