Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 132,806 pages of information and 210,387 images on early companies, their products and the people who designed and built them.
of Colindale Works, Hendon, London, NW9.
formerly Everett and Co
1906 Became limited company with Patrick Hamilton
1910 Exhibited at the Physical Society's Exhibition - the Trotter portable photometer, a trolley standard leakage detector for use by tramways, an accelerometer, a rotary synchroniser for paralleling of alternators
1927 Company sufficiently well established to be described by Aberconway
1937 Electrical and mechanical engineers. "Dwarf" Indicators. "Radiolab" Radio Testing Apparatus. "Superscale" Electrical Measuring Instruments. "Synclock" Electric Clocks.