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bimetallic thermometer

Thermometer that uses the difference in expansion of two metals (usually iron and brass) to measure temperatures between 30°C and 300°C; it is used especially in industry.

See bimetallic thermometer in : french | spanish

case

Outer covering that encloses and protects the device’s mechanism.

pointer

Metal needle connected to the shaft that indicates the temperature on the dial.

dial

Graduated face with a pointer in front to indicate the temperature.

bimetallic helix

Band made by welding together two metals with different coefficients of expansion; it curves as the temperature changes.

shaft

Rod that transmits the bimetallic helix’s rotational motion to the pointer as a result of warping caused by heat.