NATIONAL TELEPHONE COMPANY
B23

Magneto Wall Sets

Pattern No. B23

Comprises · Hand Combination Transmitter, and Receiver, Cord, Automatic Switch-hook, Induction Coil. Lightning Arrester, Magneto Generator and Bell.

This is a small set and is fitted with a two magnet generator which will ring satisfactorily through the 100ohm bell of the instrument and a line resistance of 5,000ohms.

The Batteries are fitted away from the instrument.

Taken from the 1903 Catalogue.