Exchange line and cut off rela

Made:
1938
Exchange line and cut off rela

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

Exchange line and cut off rela
Science Museum Group
© The Board of Trustees of the Science Musuem

Exchange line and cut off relays made by the Automatic Telephone & Electric Company Ltd, 1938

Details

Category:
Telecommunications
Object Number:
Y2003.22.261
type:
telephone exchange relay
credit:
Gift of British Telecommunications plc