Public domain
Production. Airplane propellers. New Hamilton propeller blades are inspected after face and camber profiling operations in a Hartford, Connecticut, plant. R. Ten Eyck checks the records and F. Breen, with a hammer and stamping die, puts the mark of approval on the butt of the blades
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Credit lineProduction. Airplane propellers. New Hamilton propeller blades are inspected after face and camber profiling operations in a Hartford, Connecticut, plant. R. Ten Eyck checks the records and F. Breen, . 1942-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.