Dalton Mark VII Dead Reckoning Computer

Philip Dalton added a simple wind drift plotter to the E-1B to create the Mark VII. Much easier to use, it was the standard dead reckoning computer in the United States from 1935 until his improved E-6B came out at the start of World War II.

Caption:
This forerunner of the ubiquitous E-6B flight computer was prominent in the five years before World War II.
Type: Artifact
Image Date: January 4, 2013
Credit: National Air and Space Museum, Smithsonian Institution
Origin: National Air and Space Museum, Smithsonian Institution
Creator: Eric Long
NASM2013-00141
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This forerunner of the ubiquitous E-6B flight computer was prominent in the five years before World War II.