Advertising Pamphlet for Otis King's Pocket Calculator

The cover of this eight-page pamphlet is blue and black. It reads: HOW THE (/) OTIS KING (/) SPIRAL (/) SLIDE RULE (/) SAVES TIME (/) AND MISTAKES (/) IN ALL (/) CALCULATIONS (/) SIMPLE (/) QUICK (/) ACCURATE. The text describes the features and advantages of the Otis King cylindrical slide rule. Drawings demonstrate the three steps required to make calculations. The pamphlet also lists 13 sample problems the Otis King Pocket Calculator could solve, 37 companies that were major customers of the rule, and 50 professions that usefully employed the rule. The back page carries five anonymous testimonials and is stamped in blue ink with the address of the instrument's U.S. distributor: CALCULATOR COMPANY (/) BOX 593 (/) LAKEWOOD, CALIFORNIA 90714.
This pamphlet arrived with 1989.3049.02. See also 1989.3049.03.
Currently not on view
Object Name
date made
ca 1965-1968
Carbic Limited
Physical Description
paper (overall material)
overall: 22.4 cm x 10.4 cm x .1 cm; 8 13/16 in x 4 3/32 in x 1/32 in
place made
United States: California, Lakewood
ID Number
nonaccession number
catalog number
Slide Rules
Science & Mathematics
See more items in
Medicine and Science: Mathematics
Slide Rules
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of LaVerne Watkins

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