F4490-001

Adams's New Patent Portable Telescope - with case Long Caption: This achromatic telescope has a barrel covered in dyed rayskin (shagreen, now split) and ten brass draw tubes. The brass fittings include an objective lens cap. The original mahogany box also survives and contains three additional eyepieces of different magnifying powers. Credit line: © National Maritime Museum, Greenwich, London Object: NAV1608 Artist: Adams Date: circa 1800 Medium: rayskin (shagreen); brass; glass Size: length: 223 (closed, with cap); 1620 (fully emm xtended, appromm x.); diameter: 61 mm (mamm x.), 57 mm (barrel); 262 mm x 85 mm x 135 mm Click here to buy a bespoke print of this image.