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Use for mechanical and electrical systems that relay information within buildings.

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Mechanical semaphore 1: Wills's Cigarettes: No. 31 signalling series

c 1912

Mechanical semaphore 2: Wills's Cigarettes: No. 32 signalling series

c 1912

Panasonic Toughbook taken on board LOT 41

c 2006

Electric cord for Panasonic Toughbook taken on board LOT 41

c 2006

Electric transformer for Panasonic Toughbook taken on board LOT 41

c 2006

Allied Naval Signal book ACP 175

1951