Graseby

Graseby was a British engineering company.

History

As Graseby Instruments it made and refurbished naval sonar equipment. The company (00385807) was established on 25 February 1944.

On 1st January 1982 it merged with Pye Dynamics forming Graseby Dynamics and moved its operations to the latter's site in Bushey, Hertfordshire. Later it became part of Cambridge Electronic Industries plc, with Graseby Analytical, Graseby Ionics, and Graseby Security. Cambridge Electronic Industries changed its name to Graseby plc in January 1992, being situated on the A1307 in the south of Cambridge, next to Cambridge University Botanic Garden, at Botanic House.

In April 1988 Graseby Ionics won the Queen's Award for Technological Achievement for CAM, a hand-held chemical vapour monitor.

In May 1992 Graseby plc bought Intertest.

In 1997 it was bought for £126m by Smiths Industries.

Products

Sonar equipment
Torpedo decoys
Gyroscopes for inertial navigation of guided missiles^[1] in a gimbal system.
Chemical agent monitors (Graseby Dynamics)

Structure

It was initially situated in Tolworth in south-west London. At this time before 1965, Tolworth was part of Surrey.^[2] It was situated on the A3 near the junction with the A243.

Alumni

Paul Lester, former Chief Executive from 1990-97

References

Hydroacoustics

Sonar	Active acoustics Baffles (submarine) Bistatic sonar Echo sounding Fessenden oscillator GLORIA sidescan sonar Multibeam echosounder Passive acoustics Scientific echosounder Side-scan sonar Sonar beamforming Sonobuoy Surveillance Towed Array Sensor System Synthetic aperture sonar Towed array sonar Upward looking sonar

Ocean acoustics	Acoustic network Acoustic release Acoustic Doppler current profiler Acoustic seabed classification Acoustical oceanography Hydrophone Long baseline acoustic positioning system Ocean acoustic tomography Short baseline acoustic positioning system Sofar bomb SOFAR channel Sound speed gradient Sound velocity probe Ultra-short baseline Underwater acoustics Underwater acoustic communication Underwater acoustic positioning system

Acoustic ecology	Acoustic survey in fishing Acoustic tag Animal echolocation Beached whale Deep scattering layer Fishfinder Fisheries acoustics Hearing range of marine mammals Marine mammals and sonar Whale song

Related topics	Acoustic signature Bioacoustics Biophony Geophysical MASINT Hydrographic survey Noise map Soundscape

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