Bourdon-tube gauge

American

[boor-dn toob, -tyoob, bawr-, bohr-, boor-dawn-] / ˈbʊər dn ˌtub, -ˌtjub, ˈbɔr-, ˈboʊr-, bʊərˈdɔ̃- /

noun

Chemistry.

an instrument for measuring the pressure of gases or liquids, consisting of a semicircular or coiled, flexible metal tube attached to a gauge that records the degree to which the tube is straightened by the pressure of the gas or liquid inside.

1900–05; named after E. Bourdon, 19th-century French inventor

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