NATIONAL TELEPHONE COMPANY
B375


Mining and Engine House Telephones

Pattern No. B375

BATTERY RINGING


Comprises Granular Carbon Transmitter, Powerful Receiver and Listening Tube, Induction Coil, and Connecting Terminals.

The whole of the parts are fitted in a cast iron waterproof case, provided with stuffing glands, through which the line wires pass to the interior.

This pattern is also suitable for use on ships.


Last revised: December 29, 2002