Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,092 pages of information and 210,772 images on early companies, their products and the people who designed and built them.
of Ducon Works, Victoria Road, North Acton, London, W3.
of 85 Mortimer St, London (1908); of Denzil Works, Willesden, London, N.W. 10 (1926).
1908 Instruments for electrical measurement.
1937 Resistance and relay manufacturers.