Bell machine

F3097

Bell machine Long Caption: Telescope bell machine (or 'zone clock') made by Alexander Herschel and used by William Herschel with his 40-inch telescope. Credit line: © National Maritime Museum, Greenwich, London, Herschel Collection Object: ZAA0658 Artist: Johann Alexander Herschel Date: circa 1790 Medium: metal Size: 390 mm x 285 mm x 150 mm Click here to buy a bespoke print of this image.