Abstract
LONDON Royal Society, February 15.—“Description of an Apparatus employed at the Kew Observatory, Richmond, for the Examination of the Dark Glasses and Mirrors of Sextants.” By G. M. Whipple, B.Sc., Superintendent.
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Societies And Academies . Nature 27, 473–476 (1883). https://doi.org/10.1038/027473b0
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DOI: https://doi.org/10.1038/027473b0