Dynamometers for measuring force or torque designed by McDougale and Robert Salmon. Copperplate engraving by Wilson Lowry after a drawing by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1809.

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Size: 4808px × 6136px
Photo credit: © Florilegius / Alamy / Afripics
License: Licensed
Model Released: No

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