Ornament Details
013940050000050_1
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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.
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
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