This specialty slide rule was designed to aid those planning aerial photography, relating the aircraft's altitude, air speed, etc. with the desired area to be photographed. It would not have been used for the detailed deisgn of a mission, but it was a way for engineers and air crews to get a quick sense of the basic parameters of a mission. The device would have been useful for classified military as well as unclassified civilian applications.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type INSTRUMENTS-Computers, General Purpose Manufacturer Litton Industries
 Dimensions Approximate: 8 × 16cm (3 1/8 × 6 5/16 in.)
 Materials Paper
Plastic
Coating
 Inventory Number A20170089000 Credit Line Gift of Litton Industries Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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