In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature. Mercury thermometers are used in households, laboratory experiments, and industrial applications.

Thermometers are used in:

  • Power plants and piping
  • Chemical tanks and vats
  • Heating and cooling equipment
  • Breweries, canneries
  • Bakeries, candy making
  • Dairies, ships
  • Wineries and distilleries
  • Paint kettles