Public domain
Worm shaft which may be made in a tool shop having turret lathe, tool room screw cutting lathe, horizontal milling machine, drill press, and heat treating facilities
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineWorm shaft which may be made in a tool shop having turret lathe, tool room screw cutting lathe, horizontal milling machine, drill press, and heat treating facilities. 1941-01-01. Gruber, Edward. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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