Energised flat-diaphragm loudspeaker

SMG00288759

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

SMG00288759
Science Museum Group
© The Board of Trustees of the Science Museum

Energised flat-diaphragm loudspeaker, complete, c. 1935

Details

Category:
Radio Communication
Object Number:
1987-682
type:
loudspeaker
credit:
Midgley, J.D.