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Term:
communication systems
Use for mechanical and electrical systems that relay information within buildings.
Objects
View all (130)
Morse code box
c 1970
Allied Naval Signal book ACP 175
1951
Mechanical semaphore 1: Wills's Cigarettes: No. 31 signalling series
c 1912
Mechanical semaphore 2: Wills's Cigarettes: No. 32 signalling series
c 1912
Photographic negative showing communication and navigational equipment on board the boat DEMALIA
1946-1962
Panasonic Toughbook taken on board LOT 41
c 2006