Craig 4507 Handheld Electronic Calculator


This handheld electronic calculator has a gray and black plastic case, with a plastic display window and square black plastic keys. It has an array of nine digit keys above the zero and decimal bars. Four keys for arithmetic functions are right of these. At the top are a percentage key, a total key, a clear key, and an on/off switch. Behind this is a red eight-digit LED display. A mark at the top reads: CRAIG.

A socket for a power cord is on the right side. This example lacks a cord. The keys are loose.

An "OPERATING OUTLINE" on a tag on the back of the case gives instructions. It reads at the bottom: CRAIG 4507 SER. 112426 (/) CRAIG CORPORATION CRAMPTON, CALIFORNIA 90720 (/) MADE IN U.S.A. PATENT PENDING.

Four screws hold the back of the case to the front. The calculator has a battery compartment at the top of the back. A mark in plastic on the back of the lid reads: C905-051. A stamp on the back of the lid reads: 077418.

Compare the Bowmar 90506, 1986.0988.0105. That calculator has the same array of keys but keys are a different shape and there is no battery pack.

Bowmar/Ali manufactured this calculator and Craig Corporation sold it.


Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 63.

Chicago Tribune, November 29, 1973, p. A16. Advertised as on sale for $69.99, with a regular price of $159.95. Said to be the same calculator as the Bowmar MX-50.

Los Angeles Times, January 16, 1974, p. A28. Advertised as on sale for $69.99.

Los Angeles Times, April 12, 1974, p. OC_B6. Advertised as on sale for $69.99.

Date Made: 1973-1974

Maker: Bowmar/AliDistributor: Craig Corporation

Location: Currently not on view

See more items in: Medicine and Science: Computers, Computers & Business Machines, Handheld Electronic Calculators


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.311Catalog Number: 1986.0988.311Accession Number: 1986.0988

Object Name: electronic calculator

Physical Description: plastic (case; display window; keys material)metal (circuitry material)Measurements: overall: 1 1/2 in x 3 in x 5 3/4 in; 3.81 cm x 7.62 cm x 14.605 cm


Record Id: nmah_1363442

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