Telegraph sounder, wood / metal, maker unknown, used by Posts and Telegraphs Postmaster General's Department, Sydney, New South Wales, Australia, 1920-1937
A telegraph sounder consisting of a brass mechanism with a pivoting arm on a square polished wooden base. Towards the centre of the sound relay are two black metal cylinders. Between the two black cylinders is a metal spring that connects one side of the sound relay to the other. There is a brass screw in each corner of the the wooden base. Three of the four screws are attaching a small rectangular plate to the underside of the wooden base.
Engraved into the side of the wooden base '13261'.