ESCAPEMENTS
Reading edition
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.
All Rights Reserved
Copyright, 1904, BY B. Thorpe, Publisher of The Keystone.