Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,470 pages of information and 233,895 images on early companies, their products and the people who designed and built them.
of Linton, Cambridge.
1953 Founded to make frequency control devices - presumably part of Cathodeon
By 1981 was one of the major European manufacturers of quartz crystals, crystal filters and oscillators.