Portable Magneto Telephone
This instrument is specially designed for telephone linesmen's use and is suitable for testing on magneto and central battery manual systems, also as a temporary telephone station.
A 2-magnet generator, 500 ohms magneto ringer, induction coil, condenser and battery are fitted in a polished hardwood case, having a compartment to take the telescopic microtelephone and waterproof cord.
The line terminals and a clip for the generator handle are mounted at the top.
The whole instrument is protected by the leather carrying case which is provided with a shoulder strap.
A battery is included.
Micro-telephone cord N4004T
Dry battery N3757
Overall dimensions 7.5 x 7.5 x 4 inches
Weight 8 lb.
A three magnet generator type is also available - Code No. N1830A
NOTE - A similar instrument for use on automatic as well as magneto and central battery manual systems, can be supplied if specially ordered. Code No. N1831.
Introduced around 1932.
Taken from the Ericsson catalogue, edition 26
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