Drawing of old <a href="https://en.wikipedia.org/wiki/anchor_escapement" class="extiw" title="wikipedia:anchor escapement">anchor escapement</a> used in pendulum clocks.  Crop of <a href="//commons.wikimedia.org/wiki/File:LA2-NSRW-1-0474.jpg" title="File:LA2-NSRW-1-0474.jpg">File:LA2-NSRW-1-0474.jpg</a> Tracing and hand-retouch of <a href="//commons.wikimedia.org/wiki/File:Clock_gear.jpg" title="File:Clock gear.jpg">File:Clock gear.jpg</a>
From <i>The New Student's Reference Work</i>
Chandler B. Beach (1839-1928) (editor), A.M., associate editor Frank Morton McMurry  (1862-1936); User:LA2 (modifications in 2005)
This file has been <b>extracted</b> from another file