Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,105 pages of information and 231,598 images on early companies, their products and the people who designed and built them.

Graseby Dynamics

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Graseby Dynamics of Bushey, Herts. Workshops at Tolworth and Weybride.

1950 Founded as Pye Dynamics, part of the Pye Group

1970s Began supplying the Ministry Of Defence with products for anti-terrorist work, to detect explosive vapours; developed the Ion Mobility Spectrometry (IMS) technology and became a global leader in vapour detection based on this.

1981 The name of Pye Dynamics Ltd was changed to Graseby Dynamics Ltd of Bushey, Herts. Part of Cambridge Electronic Industries[1]

1981 Acquired the assets and liabilities of Graseby Instruments Ltd, founded in 1944 to make military electro-acoustic underwater technology[2]

1980s The IMS expertise was extended to detecting chemical warfare agents.

1992 Cambridge Electronic Industries adopted the name Graseby plc

Late 1990s: Graseby won the contract for the Prototype Biological Detection System (PBDS) for the UK Ministry of Defence - the forerunner of modern bio-detection and identification systems.

1997 Graseby plc was acquired by Smiths plc. Graseby Dynamics became Smiths' first venture into the detection sector.

See Also


Sources of Information

  1. Cambridge Electronic Industries incorporation filing
  2. Cambridge Electronic Industries incorporation filing