Battery Call Watertight Telephone
Wall telephone fitted with a substantial gas and water tight iron case. Similar to K7853.
Hunningscone transmitter with waterproof diagram and gun metal mouthpiece. Fitted with an induction coil and one double pole receivers. (K7853 with two receivers shown to right).
Cost in 1916 was £4.0.0
Last revised: February 05, 2011