This instrument is of the large size and fitted with hand micro-telephone
No. 529, with cord No. 2061, resting in a cradle switch, four-magnet generator No. 479
which will ring satisfactorily through the 300 ohm bell of the instrument and a line
resistance of 25,000 ohms, battery box to accommodate two cells No, 586 or 971, and paper
clip, not writing tablet as shown.
Weight 20.50 lbs.
Price £4 17s.
See also AB 650.
Taken from the Ericsson Telephone Catalogue 1903 and also in the 1897 Catalogue
This instrument is of the large size and fitted with hand micro-telephone
No. 529, with cord No. 2061, resting in a cradle switch, four-magnet generator No. 479
which will ring satisfactorily through the 300 ohm bell of the instrument and a line
resistance of 25,000 ohms, battery box to accommodate two cells No, 586 or 971, and paper
clip, not writing tablet as shown.