Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,692 pages of information and 232,163 images on early companies, their products and the people who designed and built them.
of 72 Wellington Street, Sheffield
1760s Alfred Ridge & Sons were established suppliers of wood boring tools to the Royal Navy.
1936 The company was put into voluntary liquidation; W L Ridge was chairman<ref>The London Gazette 12 June 1936</ref
WWII Supplied mine detectors for the D-Day landings.