Portable telescope
This barrel and three draw tubes of this telescope are covered in vellum and the barrel is decorated with gold tooling. Stop lines on the draw tubes indicate the optimum working length of the telescope. The lenses are set in horn mounts, although the objective lens (which would have been non-acrhomatic) is now missing. There is a sliding eyepiece cover made of brass.
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Object Details
ID: | NAV1558 |
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Collection: | Astronomical and navigational instruments |
Type: | Portable telescope |
Display location: | Not on display |
Creator: | Unknown |
Date made: | circa 1740 |
Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
Measurements: | Overall: 410 mm; Diameter: 51 mm |
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