Hand speculum grinding/polishing machine

Made:: 1780-1820 in Berkshire and Slough

maker:: William Herschel

Hand speculum grinding/polishing machine constructed and used by Sir W. Herschel for polishing specula of 6-inch aperture.

Details

Category:: Astronomy

Object Number:: 1876-1019

Materials:: iron, brass, wood, graphite and complete

Measurements:: overall: 150 x 780 x 310 mm

type:: machines and polishing machines

credit:: Mr John Herschel-Shorland

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Hand speculum grinding/polishing machine

Details

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