Select mechanical exercises : shewing how to construct different clocks, orreries, and sun-dials, on plain and easy principles : with several miscellaneous articles, and new tables ... : to which is prefixed, a short account of the life of the author (1773)
Ferguson, James, 1710-1776, Lodge, John, -1796, Franklin, Benjamin, 1706-1790, Strahan, William, 1715-1785, Cadell, T. (Thomas), 1742-1802 · London : Printed for W. Strahan, and T. Cadell ... · leaf 11
SELECT EXERCISES. A Clock Jhewing the Hours, Minutes , and Seconds, having only three Wheels and two Pinions in the whole Movement . Invented by Dr. Franklin of Phila- delphia. fTlHE dial-plate of this clock is reprefented by Fig. i . of Plate I. The hours are engraven in fpiral fpaces, along two…
Industrial arts · Horology · Clocks and watches · Sundials · Planetariums
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
