New York, New York(?). Grinding thin wafers of quartz to close tolerances, for use as radio crystal oscillators. Five hundred crystals a day can be produced by this firm which previously manufactured jewelry and watch cases

Actual size of negative is C (approximately 4 x 5 inches).
Title and other information from caption card.
Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944.
More information about the FSA/OWI Collection is available at http://hdl.loc.gov/loc.pnp/pp.fsaowi
Film copy on SIS roll 32, frame 1924.