Graseby Instruments
of Tolworth near Surbiton
1944 Company established to make military electro-acoustic underwater technology[1]
Designed and manufactured transducers for military use. Make equipment for Royal Navy sonar.
1975 William Charles Crawt, Tool Room Supervisor, Graseby Instruments Ltd., was awarded the BEM[2]
1976 Bernard Moore, Wound Component Supervisor, Graseby Instruments Ltd., was awarded the BEM<ref>London Gazette 4 June 1976</ref?
1981 Acquired by Graseby Dynamics