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 148,405 pages of information and 233,863 images on early companies, their products and the people who designed and built them.


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of Welwyn Garden City.

  • 1936 Private company.
  • 1961 Electronic engineers and manufacturers of ferrite and iron dust cores, coil formers and auxiliary components. 120 employees. [1]

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