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Mark IXA

The sextant has an alloy casing with artificial materials, housing optical equipment, a clockwork averaging mechanism, electrical equipment, and a rubber eyecup. It is contained in a fitted shaped plastic case with a leather carrying-strap. The sextant is in poor condition.

The instrument has a scale measuring from 0° to 80° by 1°, and a vernier measuring to 1 arcminute.
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Object Details

ID: NAV1238
Collection: Astronomical and navigational instruments
Type: Bubble Sextant
Display location: Not on display
Creator: Henry Hughes & Son Limited
Date made: 1942
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 210 mm x 155 mm x 200 mm
Parts: Mark IXA