Northumberland Telescope: the original worm from the drive
Institute of Astronomy Library
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Anon. (2009). Northumberland Telescope: the original worm from the drive [digital image]. http://www.dspace.cam.ac.uk/handle/1810/219202
Identification photograph for the original worm from the drive of the Northumberland Telescope (1838). This part was replaced by a modern part in September 2009.
metal rod cut as worm
telescopes, telescope drives, worms, clock drives
This record's URL: http://www.dspace.cam.ac.uk/handle/1810/219202