STERLING TELEPHONE AND ELECTRIC Co. Ltd

STERLING PRIMAX SYSTEM OF AUTOMATIC INTERPHONES
RADIAL SWITCH TYPE

By the adoption of our "Primax" System Induced Cross Talk is reduced to a minimum

No. U 426
Automatic Interphone, Wall Pattern (Radial Switch Type), comprising:-
Standard pattern Hand Combination (No. U 175), Automatic Switch Cradle, Induction Coil, Call bell, Combined Ringing Key and Automatic Cut-in and Cut-out Device, "Perfecta" step-by-step Radial Line Selector.

Metal parts are Nickel-plated and Woodwork Solid Walnut, with Hinged backboard.

A 10 way telephone is shown pictured to the right, but below is a 7 way telephone which probably was a special order.

Available in 5, 10, 15 or 20 lines.
(Over 20 line models can be made to order)

No. U 427
Table Telephone, comprising:-
Same parts as No. U 426, but with Buzzer instead of bell and with the addition of Multiple Flexible Cord and Wall Rosette.

Available in 5, 10, 15 or 20 lines.
(Over 20 line models can be made to order)

Taken from the Sterling Catalogue No. 11 & 12

U426 (7 way)

Last revised: February 19, 2025