View of woman worker inspecting pistons for Pratt & Whitney aircraft engines. Label on back: "2,000 h.p. Pratt & Whitney aircraft engine, piston. Photograph #74609. This general view of piston surface finish inspection is but one of the dozens of inspection operations required in fabricating. Surface finish tolerances on these pistons is 25 micro inches as per Pratt & Whitney finish specifications." Handwritten on back: "Women workers."
