RGO Archives/RGO 4 contains:
<-- See earlier
164	Tables and computations
165	Astronomical tables
166	Papers on observational methods
167	Papers on computing and observational methods
168	Text on nutation of the Earth's axis
169	Drafts of Dr Waring's books
170	Notes on mathematical theory
171	Notes on observing Jovian satellites
172	Theory of light refraction
173	Theory of light reflection and refraction
174	Illustrations of refraction corrections
See later -->

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Papers of Nevil Maskelyne

Title	Construction and use of quadrants
Reference	RGO 4/179 (former reference: A2/421G)
Covering Dates	1778
Extent and Medium	1 volume

Content and context

John Gray, 'The construction and use of two new quadrants for finding the latitude and the longitude at land or at sea, by observations of the Moon and stars when near the Meridian', including accounts, with diagrams, on the construction and application of new land and sea quadrants, and various problems in finding latitude and longitude. At the end of the book is a contents list of specific points. The preface is dated 13 May 1778.

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