Bimetallic-coil Thermometers

Bimetallic-coil Thermometers

These thermometers contain a coil in the probe made of two different metals that are bonded together. The two metals have different rates of expansion. The coil, which is connected to the temperature indicator, expands when it is heated. This food thermometer senses temperature from its tip and up the stem for 2 to 2 1/2 inches.

The resulting temperature is an average of the temperatures along the sensing area. These food thermometers have a dial display and are available as oven-safe and instant-read.

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