Sextant sight tube

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Sextant sight-tube.

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ID:	ACO1256.5
Type:	Sextant sight tube
Display location:	Not on display
Creator:	Heath & Co. Ltd
Date made:	circa 1939
Credit:	National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements:	Diameter: 30 mm;Overall: 80 mm
Parts:	Sextant Sextant box (ACO1256.1) Sextant telescope (ACO1256.2) Sextant telescope (ACO1256.3) Sextant eyepiece tube (ACO1256.4) Sextant sight tube (ACO1256.5) Sextant shaded eyepiece (ACO1256.6) Sextant shaded eyepiece (ACO1256.7) Sextant adjusting pin (ACO1256.8) Sextant spanner (ACO1256.9) Sextant box key (ACO1256.10)