STERLING TELEPHONE AND ELECTRIC Co. Ltd


MINER’S POCKET TELEPHONE
(FOR BATTERY RINGING)

No. U 568

Miner’s Tapping Telephone, comprising:
No. U 35 Ader Type Receiver, which serves both as Receiver and Transmitter, with Flexible Cord fitted to Circular Mahogany Block with “Ringing” and “Speaking“ Push Buttons, and provided with Expanding Hooks for making rapid connection to the bare signalling wires in mines.

NOTE: It is not claimed that this Instrument is as efficient, as a Standard Telephone.


 
 
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Last revised: April 28, 2021

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