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 143,344 pages of information and 230,023 images on early companies, their products and the people who designed and built them.

Francis Searchlights

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Signalling lamp on the Royal Yacht Britannia

of Union Road, Bolton

Makers of searchlights since 1901.

Now part of the Fort Vale Group.

Company website

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Sources of Information