Steelyard
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“The Steelyard is more portable then the ordinary balance. It consists of a lever, AB, moving round a knife-edge or point at C. The body to be weighed, W, is put into the scale which hangs from A; and a movable weight P, is made to slide along the longer arm, until the lever, AB, remains horizontal.” — Chambers’ Encyclopedia, 1875
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BalancesSource
Chambers's Encyclopedia (Philadelphia, PA: J. B. Lippincott Company, 1875)
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