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Instruction Manual for Keuffel & Esser Polyphase Duplex Pocket Slide Rule

Instruction Manual for Keuffel & Esser Polyphase Duplex Pocket Slide Rule

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Description
This 70-page booklet was received with 1993.0357.01. The book explains how to operate model 68–1555, which was model 4168 before 1962. Its citation information is: Keuffel & Esser Polyphase Duplex Pocket Slide Rule... Instruction Manual, 2nd ed. (New York: Keuffel & Esser Co., 1947). Presumably only the cover and illustration of the slide rule were updated in the 1960s. Topics covered include: multiplication and division, proportion, squares and square roots and cubes and cube roots, and plane trigonometry. Answers are provided at the back.
Location
Currently not on view
Object Name
pamphlet
date made
1960s
maker
Keuffel & Esser Co.
place made
United States: New York, New York City
Physical Description
paper (overall material)
Measurements
overall: 19.8 cm x 13.4 cm; 7 25/32 in x 5 9/32 in
ID Number
1993.0357.01.01
accession number
1993.0357
catalog number
1993.0357.01.01
Credit Line
Gift of Alfred E. Brown
subject
Mathematics
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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