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58.—Screw Lever Pointer.

58.—Screw Lever Pointer.

Elementary Mechanics, Including Hydrostatics and Pneumatics. Revised edition (1882)

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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