Control Switch Box, part of the Murray Telegraph Multiplex System.
There are three ciircular multipin sockets on the front. These sockets match the three plugs on the distributor; all are marked RECEIVE, SEND and LOCAL.
Wooden cabinet with sloping top, with two meters on the top.
Markings for switches and meters
Type of item
280 mm (Length), 153 mm (Width), 420 mm (Height)
Dimensions of control switch box only.