IBM Machine Load Computer Slide Rule


This plastic rectangular instrument calculated the time required for different types of IBM punched card equipment to process given numbers of cards. The black side is for accounting machines, sorters, and collators. The white side is for card punches, verifiers, and auxiliary machines. These machines were in use from roughly 1953 through 1959. The white side is marked: IBM; International Business Machines Corp. (/) 590 Madison Ave. New York 22, N.Y. (/) Patent Applied For. It is also marked THINK and MADE IN U.S.A. An instruction card is provided. A tan envelope is marked: IBM (/) MACHINE LOAD COMPUTER (/) AND DESCRIPTIVE FOLDER (/) Form 20-8704-1. No patent record was located.

Benjamin S. Mulitz, the donor, worked with punched card equipment and then with computers from 1940 until 1985. He used both Remington Rand and IBM products. He was employed by the U.S. government and then in the wholesale drug industry.

Reference: accession file.

Date Made: 1953-1959

Maker: International Business Machines Corporation

Location: Currently not on view

Place Made: United States: New York, New York City

Subject: MathematicsRule, Calculating


See more items in: Medicine and Science: Mathematics, Computers & Business Machines, Science & Mathematics, Slide Rules


Exhibition Location:

Credit Line: Gift of Benjamin S. Mulitz

Data Source: National Museum of American History

Id Number: 2006.0174.02Accession Number: 2006.0174Catalog Number: 2006.0174.02

Object Name: slide rule

Physical Description: plastic (overall material)paper (case material)Measurements: overall: .2 cm x 25 cm x 10 cm; 1/16 in x 9 13/16 in x 3 15/16 in


Record Id: nmah_1381787

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