Alidade

Alidade with two jointed legs.
Graduations: one leg graduated 0-220, the other 230-470. The same graduations are repeated on the reverse of each leg.
Sights: open "V" sights are fitted at ends of each leg.

Object Details

ID: NAV1359
Type: Alidade
Display location: Not on display
Creator: Unknown
Date made: circa 1600
Credit: National Maritime Museum, Greenwich, London. Caird Collection
Measurements: Overall: 20 mm x 225 mm x 32 mm
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