The ready observator, or, An infallible method for determining the latitude at sea by latitudes of the sun : at any time of the day, either fore-noon or after-noon, independant of a meridional observation : the whole rendered peculiarly easy for practice : and annexed with a compleat and correct sett of all the necessary tables ...

The ready observator, or, An infallible method for determining the latitude at sea by latitudes of the sun : at any time of the day, either fore-noon or after-noon, independant of a meridional observation : the whole rendered peculiarly easy for practice : and annexed with a compleat and correct sett of all the necessary tables ...

Infallible method for determining the latitude at sea by latitudes of the sun

London : Printed for the author and sold by Wells and Grosvenor ..., by the mathematical instrument-makers, and all booksellers ..., 1771.

[2], iii, [1], 8, [64] p. : chiefly tables ; 24 cm. (4to)

L2001F40 1771

(OCoLC)24845049

Engraved title with hand colored vignette; vignette signed: N.D. Falck, inv., James Taylor, sculp.
Signatures: [pi]2 *a2 a-b2 A-P2 Q1.
Leaf pi2 printed and bound as p. [63]-[64]
Errata: p. [iv]
Publisher's advertisement: p. [63].
Ms. inscription on t.p.: Lieut. Thos. Graves (DNB cites two men named Thomas Graves, both of whom served as lieutenants in the British navy in the same period, and both of whom participated in the Seven Years' War and in the American Revolution); embossed ownership label: Royal United Service Institution.

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