An American serviceman operates an Air Compass #141, a Sperry Gyro scope, during World War One. The photograph was taken on June 3, 1918, by Lt. deBerri, Signal Corps. Please note that the image is not to be published. The airspeed on the compass ranges from 90 to 160.

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Size: 9178px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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