bimetallic thermometer![click to hear](/images/speaker.jpg)
Thermometer that uses the difference in expansion of two metals (usually iron and brass) to measure temperatures between 30°C or 86°F and 300°C or 375F°; it is used especially in industry.
case ![click to hear](/images/speaker.jpg)
Outer covering that encloses and protects the device’s mechanism.
pointer ![click to hear](/images/speaker.jpg)
Metal needle connected to the shaft that indicates the temperature on the dial.
dial ![click to hear](/images/speaker.jpg)
Graduated face with a pointer in front to indicate the temperature.
shaft ![click to hear](/images/speaker.jpg)
Rod that transmits the bimetallic helix’s rotational motion to the pointer as a result of warping caused by heat.