File:US Army AF Drift Sight Mk. I on DH4.jpeg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	12:42, 22 September 2011		1,800 × 1,711 (339 KB)	commons>Maury Markowitz	{{Information \|Description = Low Height Drift Sight Mk. I mounted on the side of an Airco DH.4 in World War I \|Source = [http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=7199 Interwar Development of Bombsights] on the US Air Force

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Image title	Wimpris bombsight on a DH-4. An observer with the Wimperis bombsight, an old type. The latest sight is inside the fuselage. During WW I, the U.S. Army Air Service used the Mark I bombsight– a copy of the British Wimperis bombsight – on its DH-4s. After adjusting the sight for altitude and airspeed, the bombardier essentially aimed it like a rifle. Lacking a stabilizer, the Mark I’s accuracy suffered from movements of the airplane in flight, but it could compensate a little forwind. (U.S. Air Force photo)
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CS2 Windows
File change date and time	14:02, 5 February 2007
Color space	Uncalibrated
Image width	1,800 px
Image height	1,711 px
Date and time of digitizing	09:02, 5 February 2007
Date metadata was last modified	09:02, 5 February 2007
IIM version	2