The Milometer slide rule computer

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Description (Brief)
A WWI machine gun fire control computer, labelled the Milometer. This slide rule-like computer was used by forward observers to pinpoint the indirect fire of machine guns and small arms. Copyrighted by G. P. Wilhelm in 1917, it was manufactured and distributed by Edward C. McKay of Cleveland, Ohio. The sliding part and the top are cream celluloid; the bottom is clear yellow celluloid.
Directions for the slide rule's use can be found in the book Machine Gun Fire Control by Captain Glenn P. Wilhelm, published in 1917 by Edward C. McKay.
Location
Currently not on view
date made
1917
Physical Description
cellulose nitrate (overall material)
Measurements
overall: 3.5 cm x 16.8 cm x .5 cm; 1 3/8 in x 6 5/8 in x 3/16 in
overall: 1 1/2 in x 6 5/8 in x 3/16 in; 3.81 cm x 16.8275 cm x .47625 cm
ID Number
2006.0098.1569
catalog number
2006.0098.1569
accession number
2006.0098
related event
World War I
See more items in
Medicine and Science: Chemistry
Celluloid
Military
Computers & Business Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

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