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58.—Screw Lever Pointer.Elementary Mechanics, Including Hydrostatics and Pneumatics. Revised edition (1882)
58.—Screw Lever Pointer.
139. A combination of levers is sometimes used, but more often for the purpose of magnifying small motions than for exerting great force; that is, for increasing the factor s in the product work at th [...]
Keywords: machinery, levers, diagrams
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Added: 2008-10-29
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