A section of a 1938 manual telephone exchange switchboard installed at Brodick, Isle of Arran, Scotland, in 1947; it was in continuous use there until 1974. Operators spoke directly to callers and connected them manually by plugging jack plugs into the appropriate sockets. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williamson, Mark |
Taille de l’image : | 3384 px × 5164 px |
Model Release : | Non requis |
Restrictions : | - |