Remarks on the Hadley's quadrant, tending principally to remove the difficulties which have hitherto attended the use of the back-observation, and to obviate the errors that might arise from a want of parallelism in the two surfaces of the index-glass. By Nevil Maskelyne, F.R.S. Astronomer Royal.

  • Maskelyne, Nevil, 1732-1811.
Date:
M.DCC.LXXII. [1772]
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London : printed by W. Bowyer and J. Nichols, M.DCC.LXXII. [1772]

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[2],24p. ; 40.

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References note

ESTC T59672
Maslen and Lancaster. Bowyer ledgers, 4929

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Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.

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