Bulb, Acoustics Equipment. “936 BY” written on the bulb inside box.

Bulb, Acoustics Equipment

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Bulb, Acoustics Equipment
Science Museum Group
© The Board of Trustees of the Science Museum

Bulb, Acoustics Equipment. “936 BY” written on the bulb inside box.

Details

Category:
Acoustics
Object Number:
1947-224/43
type:
bulb
credit:
Admiralty (Tactical & Staff Duties Division)