National Museum of American History
Patent Model of a Pantographic Engraving Machine
Spencer, J. Civilian · ca 1870
This patent model demonstrates an invention for a pantographic engraving machine which was granted patent number 99794. The patent describes a machine for engraving on name plates and other metallic ware.
🔒
Order museum-quality prints
Sign in to order prints, canvas, and more of this work. Browsing and full-resolution downloads stay free.