Historical information
Photo shows the face of a signalling unit, rather like a ships "Engine Order Telegraph" used to signal the engine house from a car house regarding the operation of the cable.
Significance
Demonstrates a photo showing the face of a cable signalling unit, photographed at Clifton Hill car house or depot.
Physical description
Black and white print with notes on the rear.
Inscriptions & markings
"This was at Clifton Hill sheds"