F4508

Polygonal telescope Long Caption: This non-achromatic telescope has an octagonal mahogany barrel and a single brass draw tube. The other brass fittings include sliding eyepiece and objective lens covers. The telescope once belonged to Rear-Admiral Charles Steevens (1705-61), and is of a type commonly used on board ship in the 18th century. Credit line: © National Maritime Museum, Greenwich, London Object: NAV1655 Artist: unknown Date: circa 1750 Medium: mahogany; brass; glass Size: length: 361 mm (closed), 596 mm (fully emm xtended); diameter: 36 mm (barrel), 38 mm (mamm x.) Click here to buy a bespoke print of this image.