This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Information: Catalog and Supplier Database for Engineering and Industrial Professionals.

If you want to enlarge one of these images, you can just click on the thumbnail and a larger image will appear. In the seventeenth century, for the first time, artists had a device, called the ...

The parts and uses of a pantograph. Engraving by B.L. Prevost after L.J. Goussier.

This patent model demonstrates an invention for an engraving machine with a pantograph; the invention was granted patent number 9743. The machine for "mezzotint or other engraving" stood on a table ...