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Pocket telescope
The barrel of this non-achromatic telescope is covered in sharkskin and is decorated with gold tooling. There are four draw tubes, each covered in marbled paper. Gold-tooled stop lines around the draw tubes indicate the optimum working length of the telescope. The other fittings and screw-on lens caps are made of ivory.
Two inscriptions appear on the telescope. The maker's details are engraved on the objective lens: 'FRANC SANSEDONIUS. 1730 NEAPOLI'. In addition, the words 'Questo va di sopra', meaning 'this end up', are handwritten on the optics combination, presumably to ensure that it is assembled the correct way round.
Two inscriptions appear on the telescope. The maker's details are engraved on the objective lens: 'FRANC SANSEDONIUS. 1730 NEAPOLI'. In addition, the words 'Questo va di sopra', meaning 'this end up', are handwritten on the optics combination, presumably to ensure that it is assembled the correct way round.
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Object Details
| ID: | NAV1551 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Pocket telescope |
| Display location: | Not on display |
| Creator: | Sansedonius, Franc |
| Date made: | 1730 |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Length: 273 mm (closed), 828 mm (open to stop lines); Diameter: 33 (max.) |