MAGNETO RINGING TELEPHONE
WITH FIVE-MAGNET GENERATOR
No. U 354
Magneto Wall Telephone (Long Distance Bridging Type), comprising: Solid Back Granular Carbon Transmitter on Adjustable Arm, Induction Coil, Double Pole Bell Receiver, British Post Office Pattern with Enamelled Brass Case and Enclosed Terminals, Five Magnet Generator to ring through a line resistance of 50,000 ohms, 2,500 ohm Polarised Call Bell, 3-in. Bell. Metal Gongs with Metal Protector for Hammer, Removable Automatic Switch Hook, Lightning Arrester, etc.
All Metal parts heavily Nickel-plated Woodwork Solid Polished Walnut, with accommodation for two No. 2 Dry Cells for Microphone Battery.
Taken from the Sterling Catalogue No. 11 & 12
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