Engraving a Map
![Image: Engraving a Map](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/Copper_plate_engraver.jpg?itok=vDmHiI87)
Detailed Description
With great precision, an engraver carefully cuts away small ribbons of copper to create the contour plate for a US Geological Survey topographic quadrangle.
Sources/Usage
Public Domain.
With great precision, an engraver carefully cuts away small ribbons of copper to create the contour plate for a US Geological Survey topographic quadrangle.
Public Domain.