Keuffel & Esser Log Log Duplex Decitrig Slide Rule Documentation
date: label: date made
content: 1964
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: This green softcover instruction manual, advertising pamphlet for various pocket-sized Keuffel & Esser slide rules, and leaflet on "How to Take Care of Your Slide Rule" were received with 2007.0181.01. The citation information for the manual is: Lyman M. Kells, Willis F. Kern, and James R. Bland, <i>Slide Rule Manual: Log Log Duplex Decitrig</i>, 4th ed. (New York: Keuffel & Esser Co., 1955). Kells, Kern, and Bland were all mathematics professors at the U.S. Naval Academy. The cover indicates that the manual is model "No. 68 2047 (/) OLD NO. 4187S," suggesting it was printed after 1962, when K&E changed all of its model numbers. The 125-page manual is designed for self-study and covers multiplication and division; proportion; squares, cubes, and roots; trigonometry; the log log scales; and logarithms and the slide rule. Answers to the exercises are in the back of the manual. See also 1987.0085.02.
label: Description
content: The pamphlet is marked with the motto: calculate wherever you circulate. It measures 2-1/4 X 8-1/4 inches and was copyrighted in 1960, 1962, and 1964. Information is provided for five-inch versions of K&E's Deci-Lon, Jet-log Jr., Polyphase Duplex Decitrig, Modern Polyphase, Polyphase, and Merchants slide rules. The leaflet is small (4 X 3 inches) and was copyrighted in 1944, 1949, 1958, and 1962. Users are to clean the slide rule only with a moistened cloth. Instructions are provided for adjusting and aligning the slide rule.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
label: Subject
content: Education
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Trigonometry
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content: Slide Rules
creditLine: label: Credit Line
content: Gift of Marvin Coolidge
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2007.0181.01.01
label: accession number
content: 2007.0181
label: catalog number
content: 2007.0181.01.01
objectType: label: Object Name
content: book
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 20.5 cm x 13.5 cm x 1 cm; 8 1/16 in x 5 5/16 in x 13/32 in