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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 374

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 374
1531. SPHEROMETER.—For meas-uring the curves of spherical surfaces orof templates of lenses by means of agraduated follower at the centre betweentwo bearings. The scale and nonius arecomputed for the versed sine of a fixedchord length. 1531a. ELLIPSO-GRAPHIC T U R N -TABLE. — The tablesits upon a…

Mechanical movements

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