Instructions for Otis King's Pocket Calculator
date: label: date made
content: ca 1960-1962
name: label: maker
content: Carbic Limited
notes: label: Description
content: This pamphlet folds out to eight pages and was printed on light green paper by Carbic Limited, the British manufacturer of Otis King's Pocket Calculator, a cylindrical slide rule. Carbic's address on the pamphlet—171, Seymour Place, London, W.I.—is scratched out and reprinted as 54, Dundonald Road, London, S.W.19. Dundonald Road was the last known location for Carbic, and the company was there by 1959. The calculator was available by mail order in 1960 for 62s. 6d. (roughly $175.00).
label: Description
content: The pamphlet provides details of the scales on the Model K (which performed multiplication and division) and the Model L (which also provided readings of logarithms for determining roots and powers). The examples also include problems of proportion, percentages, constant factors, and calculations in pounds sterling (before decimalization of British currency). The last three pages provide instructions for operating the instrument.
label: Description
content: See also 1987.0788.01 and 1987.0788.07.
label: Description
content: Reference: "Finding the Answer is Simplicity Itself," advertisement for the Otis King Pocket Calculator, <i>The New Scientist</i> 5, no. 121 (March 12, 1959): 548 and 8, no. 213 (December 15, 1960): 1568.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of Howard I. Chappelle
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1987.0788.06
label: accession number
content: 1987.0788
label: catalog number
content: 1987.0788.06
objectType: label: Object Name
content: leaflet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 20.2 cm x 13 cm; 7 15/16 in x 5 1/8 in