Two Spring Balances
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“Suspend two similar spring balances, A and B, from any convenient support, as shown. From the wooden rod carried by their hooks, suspend a known weight. Be sure that the dynamometers hang vertical, and therefore parallel. Record the reading of the dynamometers.” -Avery 1895
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Chemistry ApparatusSource
Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 70
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