Physical description
A spare parts kit for a signalling Heliograph, the kit is incomplete. This kit is in a circular, metal carrying case and contains a spare 5 inch mirror and six brown paper discs.
The case has a knurled rim and a small metal loop for carrying or attaching to equipment.
Inscriptions & markings
The case has paper label with the inscription "HELIOGRAPHS 5-in MARK V (AUST.)" and a list of the contents. The other side of the case has the "D^D" symbol.
The rear side of the mirror is marked with the 'D^D' symbol and the manufacturers name. "Manufactured by SOUNDCRAFT PTY LTD Sydney"
