Noise measuring unit

Made:
1960-1979
Nomal 2B noise measuring unit serial no

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Nomal 2B noise measuring unit serial no
Science Museum Group
© The Board of Trustees of the Science Museum

Nomal 2B noise measuring unit serial no.1703, marked `Dataforce' in weatherproof case, with power and battery leads and microphone mounting rod (Dataforce later became Digitronix)

Details

Category:
Acoustics
Object Number:
1992-853
type:
measuring unit
credit:
Civil Aviation Authority. Chief Scientis