Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,391 pages of information and 246,982 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
of St. Leonard's Works, Stafford
1950s-60s Produced distance protection schemes for utilities (see advert)
1975 Part of GEC's Components, Cables and Wire group of UK subsidiaries
1979 Introduced the first microprocessor-controlled relay for EHV transmission systems
Later became GEC Alsthom Measurements
Grace's Guide web site design is Copyright © 2021 by Grace's Guide Ltd. The text of this web site is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy.
MW1.43