Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,747 pages of information and 232,400 images on early companies, their products and the people who designed and built them.
1982 Absorbed the Incorporated Practitioners in Radio and Electronics (formed in 1935)
1990 Merged with the Institution of Electrical and Electronics Incorporated Engineers to form the Institution of Electronics and Electrical Incorporated Engineers
1998 Merged with other Societies to form the Institution of Incorporated Engineers