GEC K 215
With “Ringing” and “Speaking” Keys. The Wires are run bare, and the Expanding Arms of the Telephone are intended to hook one on to each line, so establishing connection with the Engine House.
The “Ring” Receiver shown is used both as Receiver and Transmitter, and although not so efficient as a Microphone, still gives good results, and possesses the advantage of portability.
Cost in 1904 - £1.10.0
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904)
Last revised: January 23, 2011