K 560
PORTABLE MILITARY TELEPHONES
The “G.P.O.” Portable Telephone
Consisting of Double Magnet Generator, Polarised Call Buzzer, Micro-telephone, Induction Coil and Two small E.C.C. Dry Cells, mounted in solid Teak Case with Sling Strap. Pattern adopted by the British Post Office.
Weight 9.5 lbs.
£4.12.6
NOTE - The two instruments illustrated above are constructed so that the interior parts are readily accessible for examination.
Taken from the Peel Conner Illustrated Telephone Catalogue 9th edition (1904)
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