hairline hygrometer

hairline hygrometer
An instrument to measure humidity. It uses one or more human hairs, which are held under tension by a spring. The length of hair increases or decreases, depending on the prevalent humidity. Also called a hair hygrometer.
Hair hygrometer.

Aviation dictionary. 2014.

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Look at other dictionaries:

  • hygrometer — An instrument used to measure humidity in the air to determine its humidity. See also hairline hygrometer. Mercury hygrometer. Hair hygrometer …   Aviation dictionary

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