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.
 
 
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Last revised: July 07, 2020

FM2