![](http://www.alamy.com/thumbs/6/004C29A0-D9A5-4DF7-A616-FADB7FD9EBEE/2BDYAFB.jpg)
Mechanism of Clock, 1809
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Photo credit: © Science History Images / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1809, 19th, alarm, art, century, clock, clockwork, diagram, engraving, history, horology, illustration, internal, john, machine, mechanics, mechanism, pass, scientific, structure, wheel, work, workings