Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,179 pages of information and 233,417 images on early companies, their products and the people who designed and built them.
of Spring Gardens, Romford.
1955 Public company.
1961 Manufacturers of wire-wound potentiometers and variable resistors including high-accuracy precision potentiometers. 650 employees.