Polygonal telescope

The decagonal barrel of this non-achromatic telescope is made of mahogany and is tapered. It has a single brass draw tube and brass fittings, including a sliding objective lens cover, of which the slide is missing. The eyepiece is also missing.

Object Details

ID: NAV1593
Collection: Astronomical and navigational instruments
Type: Polygonal telescope
Display location: Not on display
Creator: Unknown
Date made: circa 1770
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: 672 mm; Diameter: 52 mm
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