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 2 magnet generator which will ring satisfactorily through the 100 ohm bell of the instrument and a line resistance of 5,000 ohms.

The Batteries are fitted away from the instrument.

Taken from the 1903 Catalogue.
 

Last revised: July 03, 2020