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of Tolworth near Surbiton
1944 Company established to make military electro-acoustic underwater technology
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
1976 Bernard Moore, Wound Component Supervisor, Graseby Instruments Ltd., was awarded the BEM
1981 Acquired by Graseby Dynamics