US_Army_AF_Drift_Sight_Mk._I_on_DH4.jpeg


Summary

Description
English: Low Height Drift Sight Mk. I mounted on the side of an Airco DH.4 in World War I
Date 12:42, 22 September 2011 (UTC)
Source Interwar Development of Bombsights on the US Air Force Museum
Author U.S. Air Force (more likely the US Army Air Service)
Permission
( Reusing this file )
Image taken circa 1918, long ago passed into public domain regardless of source

Licensing

Public domain
This image or file is a work of a U.S. Air Force Airman or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government , the image or file is in the public domain in the United States.

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