USGS Photographer at Work
![Image: USGS Photographer at Work](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/MP007-300.jpg?itok=yXPJUcgI)
Detailed Description
Jay Prendergast adjusts the lens on a Robertson 48-inch, 4.5 ton camera. Installed in 1959, the camera was used for precise scale transformation of mapping separates and composites.
Sources/Usage
Public Domain.