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Heliograph sighting vane
The sighting vane extension arm is a three-piece hinged rod. at the forward end is a spring-loaded, hinged sighting vane, and a circular sight with crossed metal strips.
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Object Details
| ID: | NAV0930.3 |
|---|---|
| Type: | Heliograph sighting vane |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | Unknown |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 23 mm x 114 mm x 34 mm |
| Parts: |
Heliograph
|
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