Dial Thermometer

Dial Thermometer

Dial Thermometers work on principle of bi metal expansion.
Dial Thermometers consists of a sharp metal indicator which is fixed on a circular temperature scale.
There are two main components, one is a needle and another is a temperature sensor.
Scale or range of temperature which Dial Thermometers can measure may very from -200 0 C to 650 0 Centigrade.
Few more types of Dial Thermometers are Liquid type, Gas filled and Va pour tension Dial Thermometers.

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