Public domain
Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking hardness of valve stem tip by means of Rockwell hardness tester
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineDetroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking hardness of valve stem tip by means of Rockwell hardness tester. 1943-01-01. Siegel, Arthur S.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
Similar works
Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Rockwell hardness tester testing hardness of metal in a bolt
Requiring only sixty hours to build, this homemade machine enables an operator to ream simultaneously, two specially located holes in a twenty-millimeter shell booster. It would have required two months to buy a similar reaming machine on a market pressed for war orders
Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking valve springs with an Arbor press for tension
Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking bushings by means of a shadow graph and an indicator
In the material preparation department, this woman employee uses a router to drill holes in a dozen sheets of metal at once with a master template
Packing a terrific wallop. Stamping and packing 75 mm cartridge cases for the artillery in an eastern arsenal