NATIONAL TELEPHONE COMPANY
B525

BATTERY INTERCOMMUNICATION TELEPHONES

TABLE SET

Pattern No. B525

Comprises - Hand Combination Transmitter and Receiver, Fixed Cradle-switch, Induction Coil, Buzzer, Push Button, Line Selector and Wall Rosette and Cord.

A special feature with this instrument is, that while all the connections are entirely enclosed, they are easily accessible without removing the instrument from the wall, the terminals being mounted on the backboard upon which the front of the instrument is hinged.

Produced in 5, 10, 15, 20, 25 & 30 line models.

 
 
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Last revised: November 17, 2025

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