Steelyard balance. This instrument was used to weigh sacks of grain and animal carcasses. It works on the principle of the lever, having a counterbala

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Steelyard balance. This instrument was used to weigh sacks of grain and animal carcasses. It works on the principle of the lever, having a counterbalance (upper centre) which slides along a calibrated arm away from the fulcrum (upper left). The steelyard was invented independently by both the Chinese and Romans around 200 BC. This one dates from the 19th century.

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Size: 2435px × 3644px
Photo credit: © SHEILA TERRY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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