Student officers at the antiaircraft gun school at Fortress Monroe, Virginia are seen using a slide rule to make calculations for site prediction, site correction, and deflection correction. This tool was utilized for training purposes during World War I. Photograph taken by Lt. W. Fox, on May 18, 1918.

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Size: 9177px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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