Men of Fort Story operate an azimuth instrument, to measure the angle of splash in sea-target practice, Fort Story, Va

Men of Fort Story operate an azimuth instrument, to measure the angle of splash in sea-target practice, Fort Story, Va. Color transparency by Alfred T. Palmer, 1942. From the Farm Security Administration/Office of War Information Collection. Library of Congress Prints & Photographs Division. https://www.loc.gov/resource/fsac.1a35088/