Australian Army Museum of Western Australia > Records

World War 2, Western Australia, Rottnest Island, Coast Artillery Instrumentation, Indicator – Time of Flight Mk 1

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Subcollections

Coast Artillery Fire Control - Target and Projectile Coincidence

Overview

Indicator – Time of Flight Mk 1 – This instrument, located in the Battery Observation Post on Signal Ridge was used by the Battery Commander to indicate the time at which rounds from the battery should fall in the target area. The range to target was set and a plunger pushed when the guns fired. A buzzer would sound at a preset number of seconds before the rounds fell. If multiple batteries were engaging the Target, this instrument would assist the Battery Commander tin identifying his rounds.

Details

Registration number

cwa-org-32-54-695

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.

Geotag

-32.006182686498, 115.5032922981

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Links to additional resources

Battery Observation Post Layout

Australian Army Museum of Western Australia

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