Public domain
Frank Albert, reducing a navigation chart to half the size with a pantograph
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Subjects
Credit lineFrank Albert, reducing a navigation chart to half the size with a pantograph. 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
Similar works
Barrage balloon manufacture. Neck and neck in the stretch. Appearing like race horses galloping down each side of a long strip of barrage balloon fabric, the worker with the scissors apparently finishing ahead of the fellow with the electric fabric cutter. Actually the scissors are not used for cutt
Testing amount of stretch in metals at Bu. of Standards
Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and Navy. There are lights in the rear of the columnmeters and exposures are made on the photographic plate in fro
Miscellaneous lot of photographs by Barbara Wright. National Youth Administration (NYA), Works Progress Administration (WPA) and Civilian Conservation Corps (CCC). NYA draftsman, Washington, D.C.
Untitled photo, possibly related to: Washington, D.C. Preparing the defense bonds sales photomural, to be installed in the Grand Central terminal, New York, in the visual unit of the FSA (Farm Security Administration). Milton Tinsley mounting parts of the dummy
Loomis Radio School