ATM PAX T.4239

An ideal system of inter-communication between colliery offices and between administrative departments and mine workings.

A miniature replica of the public automatic telephone exchanges in London and the provinces as manufactured and installed by us for the British Post Office.

The model illustrated is equipped for 10 lines and permits two simultaneous conversations.

Particulars of 25-line, 50-line and larger installations on application.

Case finish: Dark green enamel.

OVERALL DIMENSIONS
Length, 21ins. height, 20ins. width, 8ins.
Weight, 90 lbs.

Taken from the ATM Mine Telephones and Signalling Apparatus Catalogue 1928

Last revised: October 06, 2012