Invention and Engineering

Dilatometer

A dilatometer is a scientific instrument that measures volume changes caused by a physical or chemical process. A familiar application of a dilatometer is the mercury-in-glass thermometer, in which the change in volume of the liquid column is read from a graduated scale. Because mercury has a fairly constant rate of expansion over ambient temperature ranges, the volume changes are directly related to temperature.

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See also

• ▸GCR Class 9Q
• ▸Firth of Forth
• ▸GNR Class J23

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