TELEPHONE - WALL
Magneto Telephone
FOR USE ON MAGNETO CALL AND CLEAR SYSTEMS GIVING THE HIGHEST GRADE SERVICE UP TO THE MOST EXTREME CONDITIONS

AB 535

CASE WORK
Polished walnut, constructed to hold the speaking battery of 2 cells, either Leclanche or dry cells.

MICRO-TELEPHONE
L.B. hand-set, with suspension loop for hanging on hook switch. Fitted with with 3 ft. 4 way cord.

GENERATOR
4-magnet or 5-magnet type. These generators will operate the ringer satisfactorily through a line resistance of 30,000 ohms.

RINGER
For resistance see table below.

DIMENSIONS
Height 28.5 inches, Width 13.4 inches, depth 9.75 inches.

BATTERY COMPARTMENT
To take two cells up to maximum dimensions of 3.75 inches x 3.75 x 8 inches in height, for each cell.

Telephones AB 590 and AB 590G are for use on very heavy bridging circuits.

Telephones AB 530, AB 535 and AB 590 are supplied with push button to cut out the ringer coils and short circuit the induction coil, so as to cut out the home bell when ringing out, and also to give increased reception efficiency during conversation.

The AB 590 was the No. 346 which is in the 1897 and 1911 Ericsson Catalogues.

The AB 530 was the No. 345 which is in the 1897 and 1911 Ericsson Catalogues.

See ATCS Article on the Commonwealth Ericsson

Inside the phone there is generally a paper sticker which details the ringer resistance.  By referring to the model table above it is possible to identify the telephone model.

In the 1905, 1912, 1923 and 1930 L. M. Ericsson Telephone Catalogues

AB 530