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P. Abrahams (Historical Astronomy Division, AAS)
Henry Hindley (1701-1771), was an innovative clockmaker who influenced the development of the astronomical instrumentation of his time. Hindley fabricated two telescopes, using a very early version of an equatorial drive with a complex worm gear. He developed a dividing engine, and new techniques for graduating circles, which were published and utilized to improve the accuracy of positional astronomy. Hindley's designs and techniques were used by James Short, Jesse Ramsden, and other instrument makers.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.