NATIONAL TELEPHONE COMPANY
B520
BATTERY INTERCOMMUNICATION TELEPHONES

WALL SET

Pattern No. B520

Comprises - Hand Combination Transmitter and Receiver with Double Contact Key, Cord, Fixed Cradle, Induction Coil, Bell, Push Button, and Line Selector.

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.

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

Was B71 in the 1903 Catalogue.

 
 
BACK Home page NTC
Home Page 		Search the Site Glossary of Telecom Terminology NTC
Telephone
Quick Find 		All Telephone Systems

Last revised: July 07, 2020

FM2