Telephone Exchange Ringing Machine

Made:
1939 in Sydenham

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

Telephone exchange ringing machine R2, 230v AC mains driven; 75v AC output.

Made by Walter Jones & Co. (Engineers) Ltd, Sydenham, 1939.

Details

Category:
Telecommunications
Object Number:
Y2003.22.13
Materials:
iron and metal (unknown)
type:
manual telephone exchange ringer
credit:
Gift of British Telecommunications plc