PORTABLE TELEPHONE FOR TERMINAL STATIONS No. 392
This instrument is similar to No. 390 but of lighter
construction, and fitted in a leather case with strong leather strap for carrying over the
It is fitted with a special hand micro-telephone No. 496, collapsible like a telescope, with cord No. 2159, 2 magnet generator, 500 ohm bell, two line terminals, and a dry cell No. 602. This instrument is specially suitable for inspectors of telephone and telegraph lines.
Weight with battery 7.90 lbs.
Dimensions:- 7.5 in x 4 in x 7.5 in.
Price £5 1 0s.
Also in the Ericsson 1911 catalogue as the MB 300.
Taken from the Ericsson Telephone Catalogue 1903
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