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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

NEARLY TWO HUNDRED ORIGINAL ILLUSTRATIONS

PUBLISHED BY
THE KEYSTONE
THE ORGAN OF THE JEWELRY AND OPTICAL TRADES
19th & Brown Sts., Philadelphia, U.S.A.