NATIONAL TELEPHONE COMPANY
B510


BATTERY INTERCOMMUNICATION TELEPHONES

WALL SET

Pattern No. B510

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

The connections in this pattern instrument are all enclosed, but easily accessible without removing the instrument from the wall.

5, 10, 15, 20, 25 & 30 line models.
 

 
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Last revised: July 07, 2020

FM2