Public domain
Conversion. Soft drink dispenser plant. The vice-president of an Eastern manufacturing company now producing war essentials on prime and subcontracts, tests the hardness of steel in a chamber gauge, essential for the manufacture of small arms ammunition. These gauges are made of special alloys tough
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineConversion. Soft drink dispenser plant. The vice-president of an Eastern manufacturing company now producing war essentials on prime and subcontracts, tests the hardness of steel in a chamber gauge, e. 1942-01-01. Gruber, Edward, United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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