Recent Examples of hygrometer from the Web
Because of its sensitivity to moisture, human hair is used in hygrometers (weather instruments that measure humidity).
As the humidity changes, the lengthening or shrinking of the hair strands causes the hygrometer to display the current relative humidity.
The wireless outdoor sensor features a thermometer, hygrometer, wind speed anemometer, wind direction vane and a self-emptying rainfall collector cup in a unit that is mounted on the roof.
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HYGROMETER Defined for Kids
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