Longitude and latitude lines are drawn on the Coast and Geodetic Survey projection ruling machine

Longitude and latitude lines are drawn on the Coast and Geodetic Survey projection ruling machine. This machine eliminated thousands of man-hours of drafting time that would have been required to produce the projections made for the thousands of maps produced for the Allied Armed Services during WWII. Barbara Clayton and Patricia Hayes are the operators of the machine.

Photo Location: Washington, D.C.