Other Apparatus: INTERNAL WALL TELEPHONE, 1930's
INTERNAL WALL TELEPHONE, 1930's
Common intercom used in both houses and offices between the wars (and before), all that was needed was a battery and some wire.
©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No.
1140352, Accredited Museum No. 2221