E-text prepared by Robert Cicconetti, Janet Blenkinship,
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Book provided by the New York University Library.
WATCH AND CLOCK
ESCAPEMENTS
A Complete Study In Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology
Compiled from the well-known Escapement Serials published in The Keystone