Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,706 pages of information and 232,164 images on early companies, their products and the people who designed and built them.
A subsidiary of Racal Electronics.
1982 Racal Security doubled exports over a three-year period, largely through its infrared and microwave intruder detection sensors.
1984 Racal acquired Chubb which owned a number of other lock companies.
1992 Chubb was demerged as Chubb Security