
1) Measuring instrument
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https://www.crosswordclues.com/clue/dilatometer

A device for measuring volume changes.
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http://antoine.frostburg.edu/chem/senese/101/glossary/d.shtml

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 normal temperatu...
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http://en.wikipedia.org/wiki/Dilatometer

instrument for measuring expansion
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http://phrontistery.info/d.html

• (n.) An instrument for measuring the dilatation or expansion of a substance, especially of a fluid.
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http://thinkexist.com/dictionary/meaning/dilatometer/
Dil`a·tom'e·ter noun [
Dilate +
-meter .]
(Physiol.) An instrument for measuring the dilatation or expansion of a substance, especially of a fluid.
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http://www.encyclo.co.uk/webster/D/66

A dilatometer is an instrument for measuring the dilatation or expansion of a substance, especially of a fluid.
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http://www.probertencyclopaedia.com/browse/ED.HTM

A dilatometer is an apparatus used to measure changes in volume of solids. The solid is placed in a glass bulb with a capillary tube, and the bulb and part of the tube are filled with a liquid which is without action on the solid. By observing the liquid's position in the tube, changes in the volume of the solid may be measured.
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http://www.probertencyclopaedia.com/browse/GD.HTM

An instrument used to measure thermal expansion in solids, liquids, and gases.
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https://metallurgyfordummies.com/metallurgy-glossary.html

An instrument for measuring the expansion or contraction of a solid metal resulting from heating, cooling, polymorphic changes, etc.
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

A device for measuring volume changes. See also: Volume.
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https://www.encyclo.co.uk/local/20687

a device for measuring expansion caused by changes in temperature in substances.
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https://www.infoplease.com/dictionary/dilatometer

An instrument for measuring the expansion or contraction of a solid metal resulting from heating, cooling, polymorphic changes, etc.
Found on
https://www.unifiedalloys.com/resources/glossary/
No exact match found.