Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,470 pages of information and 233,895 images on early companies, their products and the people who designed and built them.

Sumlock Anita Electronics

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Sumlock comptometer

of Uxbridge, Middlesex.

By 1961 Bell Punch Co had founded Sumlock Anita Electronics, continuining the use of the Sumlock name which had previously been applied to 'comptometers'.

1973 Rockwell bought Sumlock Anita Electronics.

1974 Manufacturer of calculators for the consumer and business market. Models of calculator included the Anita 810, Anita 811 with a memory store, the slimline Anita 1211.

Rockwell's range of calculators under the ANITA, Unicom, and Rockwell names was very successful, but these were a very small part of a large high-technology company. As the prices of calculators plummeted in the mid-1970s, and the profit too, Rockwell lost interest in them.

See Also


Sources of Information

  • [1] Origins of the Bell Punch Co