Keuffel and Esser Deci-Lon Slide Rule
date: label: date made
content: ca 1969
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: This Keuffel and Esser Deci-Lon slide rule is a model 68 1100 with 10-inch scales. The rule is made of a shatterproof synthetic material while the indicator is made of clear plastic with metal edges. Markings are in red and black. The front face is printed with 13 scales: Sq1, Sq2, DF, CF, CIF, L, CI, C, D, Ln0, Ln1, Ln2, Ln3. The reverse face is also printed with 13 scales: Ln-3, Ln-2, Ln-1, Ln-0, A, B, T, SRT, S, C, D, DI, and K scales. Printed on the reverse face and located on the right side of the lower rail is the serial number 178687 and located on the left-side of the center rail, made in U.S.A. When not in use, it is stored in an orange, stitched leather case with belt carrier. An imprint of the donor’s last name can be detected on the front of the case under the model name.
label: Description
content: The donor purchased this slide rule from the Cornell University bookstore in September 1969. He used it in his coursework for physics engineering as well as nuclear engineering. After earning a master’s degree in nuclear engineering, he served for 42 years in the U.S. Navy.
label: Description
content: References:
label: Description
content: http://www.mccoys-kecatalogs.com/KECatalogs/1962/1962kecatp10.htm
label: Description
content: http://www.mccoys-kecatalogs.com/KECatalogs/1967/1967kecatp12.htm
label: Description
content: http://www.sliderules.info/collection/10inch/020/1025-decilon.htm
label: Description
content: Accession file.
label: Location
content: Currently not on view
place: label: place made
content: United States
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Work
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Thomas Conran
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2018.0283.02
label: accession number
content: 2018.0283
label: catalog number
content: 2018.0283.02
objectType: label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: leather (overall, case material)
label: Physical Description
content: metal (overall, rule material)
label: Physical Description
content: plastic (overall, rule material)
label: Measurements
content: overall, rule: 1.1 cm x 32.5 cm x 6.3 cm; 7/16 in x 12 25/32 in x 2 15/32 in
label: Measurements
content: overall, case: 43.6 cm x 34 cm x 8.2 cm; 17 5/32 in x 13 3/8 in x 3 7/32 in