The Garden Guide

Book: Gardening Science - Soils, Manure and the Environment
Chapter: Chapter 4: Weather and Climate

Steelyard hygrometer

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1434. Steelyard hygrometer. In order to make a hygrometer with those bodies which acquire or lose weight in the air, place such a substance in a scale on the end of a steelyard, with a counterpoise which shall keep it in equilibrio in fair weather; the other end of the steelyard, rising or falling, and pointing to a graduated index, will show the changes.