Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 137,293 pages of information and 220,285 images on early companies, their products and the people who designed and built them.
1914 Increased demand for surface plates, magnetic chucks, demagnetisers
1917 Advert for magnetic chucks (Proprietor H. M. Budgett)
1919 Advert for magnetic chucks and other items