Speed regulator via gears (shown Paris Expo 1855) at Arts et Metiers Museum. Paris, France.

Speed regulator via gears (shown Paris Expo 1855) at Arts et Metiers Museum. Paris, France.
Photo by Jim Steinhart © 2020, all rights reserved. (Ref: FPMAM285)

Click an index below to see this photo among related images:

Paris Exposition Universelle 1855
Arts et Metiers Museum - Industrial Machines & Computers

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