STERLING TELEPHONE AND ELECTRIC Co. Ltd
PORTABLE TELEPHONE
Combined Magneto and Buzzer Call
FOR MILITARY PURPOSES, RIFLE RANGES, RAILWAY TRACKS, OR TESTING

No. U 541

Portable Telephone (combined Magneto and Buzzer Call) comprising:
3 Magnet Ringing Generator, 1,000 ohm Polarised Call Bell, Unbreakable Aluminium Hand Telephone with inset Receiver and Transmitter, Condenser, Induction Coil, Phonic Buzzer, 3volt Dry Battery and Signalling Key.
All mounted in Solid Teak Case on Removable, Metal Partition, and provided with Leather Sling Strap.

Weight 6 lbs.

Size 10.5 in. x 12 in. x 4.5 in.

 

Taken from the Sterling Catalogue No. 11 & 12

 
 
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Last revised: April 28, 2021

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