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 133,395 pages of information and 211,465 images on early companies, their products and the people who designed and built them.

James A. Brook

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of 24 William Street, Huddersfield, Yorkshire.

  • 1929 Advert in British Industries Fair Catalogue as an Optical, Scientific and Photographic Exhibit. Manufacturers of a Super-Sparkler and Magneto Tester giving an intensified spark at plug points at all speeds without damage to coil or magneto. "The Electric Lamp Lock King". A "Complete" electric lamp lock, locking lampholder cap, lamp, shade and bulb. (Scientific Section - Stand No. N.41 and N.42) [1]


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Sources of Information

  1. 1929 British Industries Fair Advert p123 and p30