Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 638
to ascertain. Upon the rod isfixed a small wheel or roller ^Vv, convex upon its circumference, whichturns freely upon the rod by frictional contact with the cone C. Theaxis of the cone, between its base and the bearing, carries a small pulley. METROLOGY AND MECHANICAL CALCULATION. G21 around which… … Vertical view. Fig. 143.
Machinery · Scientific apparatus and instruments
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