Significance
Yields information about the costs of locally manufactured signal boxes for used on the tramways.
Physical description
Single sheet, demi foolscap, SEC Ballarat Electricity Supply and Tramways Memo giving the costing of locally manufactured signal boxes, resistances and contactors for the tramway - 10 boxes made up.
Not formally dated, but c1939.
Inscriptions & markings
Has been filled in using ink.