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Keuffel & Esser Instructions for Log Log Duplex Slide Rule

Keuffel & Esser Instructions for Log Log Duplex Slide Rule

Usage conditions apply
This eight-page pamphlet was received with 1981.0933.01. It is undated, but Clark McCoy reports the text was written around 1914. This copy was probably printed later, around 1920. It explains the scales on K&E's model 4092 slide rule, works eleven sample problems, and advertises K&E calculating devices.
Reference: Clark McCoy, ed., "K&E Log Log Duplex Slide Rules," http://www.mccoys-kecatalogs.com/KEManuals/manuals.htm#4092.
Currently not on view
Object Name
date made
ca 1920
Keuffel & Esser Co.
place made
United States: New York, New York City
Physical Description
paper (overall material)
overall: 22.3 cm x 14.6 cm x.1 cm; 8 25/32 in x 5 3/4 in x 1/32 in
ID Number
accession number
catalog number
Credit Line
Gift of William J. Ellenberger
Rule, Calculating
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Slide Rules
Data Source
National Museum of American History
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