The ready observator; or an infallible method for determining the latitude at sea: by altitudes 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; Viz. Logarithmic Solar Tables, Sun's Declination, Natural Sines, Secants Less Radius, and Logarithms. By N. D. Falck

People / Organizations

• N. D Falck (Author)

Imprint

London : printed for the author and sold by Wells [i.e. Welles] and Grosvenor, Stationers, No. 11, in Cornhill; by the mathematical instrument-makers, and all booksellers in the sea-port-towns in Great Britain, 1771.

Publication year

1771

ESTC No.

T58755

Grub Street ID

284842

Description

[2],iii,[1],8,[64]p. ; 4°.

Note

The titlepage is engraved

Variant imprint: "Welles & Grosvenor"

The text consists mostly of logarithmic tables

With a final advertisement leaf

Vertical chain lines.