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 143,770 pages of information and 230,103 images on early companies, their products and the people who designed and built them.


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of Bury St Edmunds, Suffolk.

1974 Developed an alarm communication system using crt display instead of the usual illuminated legend which compresses the information onto a 9in screen.[1]

See Also


Sources of Information

  1. The Engineer 1974/05/09