World War 2,Western Australia, Rottnest Island, Coast Artillery Instrumentation, Depression Position Finder Type O
Overview
Depression Position Finder Type O - This instrument was only used in the Cape Vlamingh fortress observation post. This instrument was positioned so that when the telescope was laid on the target, the range and bearing so determined was automatically transmitted electrically to the fortress plotting rooms. Fitted to the instrument was a coordinate roamer which travelled on a “block square point” chart recording all movements of the target thus enabling course bearing and speed to be read.
Details
Details
Registration number
cwa-org-32-54-698
Contextual Information
This entry is based on research, documentation and technical drawings prepared by John Mercer during many years as a leading member of the Rottnest Island Military Restoration Committee and the Defence Heritage Interpretation Plan Group.
Australian Army Museum of Western Australia
Australian Army Museum of Western Australia
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