includes the original more than 180 illustrations.
See 17021-h.htm or 17021-h.zip:
(http://www.gutenberg.net/dirs/1/7/0/2/17021/17021-h/17021-h.htm)
or
(http://www.gutenberg.net/dirs/1/7/0/2/17021/17021-h.zip)





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