Public domain
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
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineRequiring 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 mont. 1942-01-01. United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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