An apparatus for accurately measuring thermal expansion of materials.
an apparatus used to measure changes in volume of solids
An instrument used to measure thermal expansion in solids, liquids, and gases.
Instrument for measuring expansion or contraction, the length of a metal sample, caused by changes in temperature or structure.
Dilatometers are measuring instruments. The thermal expansion coefficient α of the sample is defined as the rate of change of sample length with respect to the change in its temperature. Thermal expansion is a measurement of entropy of a body reacts to changes of the volume.