Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 378
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. 15310. ELLIPSO-GRAPHIC T U R X -TABLE. — The tablesits upon a…
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
