GEC K 228
THE COMBAT (Common Battery)
The 'Combat' Intercommunication
Consisting of Hand Combination with Switch in the Handle. Call Bell, and patented form of Combined Line Selector and Ringing Key. The Terminals are so arranged that connections may be made on either back or front.
NOTE - One set of Four Cells is sufficient to provide the current necessary to work an installation of Ten Stations.
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904)
Last revised: January 23, 2011