Mathematical Table, Magic Multiplying Pencil, a Pencil-Multiplier

Mathematical Table, Magic Multiplying Pencil, a Pencil-Multiplier

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This device combines a cylindrical table for multiplying numbers from 2 to 12 by numbers from 2 to 12 with a mechanical pencil. It has a wooden exterior painted red with a metal piece near the writing end (there is no lead in this example) and a yellow plastic cover for the table. A mark on the pencil reads: MAGIC (/) MULTIPLYING (/) PENCIL (/) TURN HERE (/) PAT. PEND. APEX PRODUCTS CORP. N Y C.
The pencil is stapled to a paper display card that reads in part: Sensation (/) of the (/) School Year! (/) MAGIC (/) MULTIPLYING (/) PENCIL. It also reads: [copyright symbol] Apex Products Corp., N. Y. C. (/) 1939 Made in U.S.A. Patent Pending.
[Advertisement], The Hartford Courant, September 1, 1946, p. sm 16. Magic Multiplying Pencil selling for 15 cents.
[Advertisement], Chicago Daily Tribune, August 24, 1947, p. 90. Magic Multiplying Pencil advertised as selling for 14 cents.
Currently not on view
Object Name
mathematical table
date made
ca 1945
place made
United States: New York, New York City
Physical Description
wood (overall material)
metal (around point, staple material)
plastic (around table material)
paper (advertising card material)
overall: 17.8 cm x 7.6 cm x 1.7 cm; 7 in x 3 in x 21/32 in
ID Number
accession number
catalog number
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Mathematical Charts and Tables
Data Source
National Museum of American History
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