SWITCHBOARD FOR MAGNETO OR BATTERY RINGING
For 2 to 20 lines.
TELEPHONE SWITCHBOARDS (PMBX)
These switchboards are supplied for use in Public Buildings, Hotels, Flats, etc.
All cabinet work is of well-seasoned walnut. The line indicators are not enclosed.
Annunciator switchboard, without operator's instrument or combined ringing and listening keys attached, but equipped with line indicator K8400, line jacks K8405, through cords K8473, operator's cord K8474, double line plugs K8423, and 3-inch circular bell and switch.
In 1916 and 1926 it was available in 2, 3, 4, 5, 6, 8, 10, 12, 15, 18 and 20 line sizes.
The 1916 model is shown above right.
Last revised: February 01, 2011