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The seaman's tutor, explaining geometry, cosmography, and trigonometry : with requisite tables of longitude and latitude of sea-ports, traverse tables, tables of easting and westing, meridian miles, declinarions, amplitudes, refractions, use of the compass , kalendar, measure of the earth's globe, use of instruments and charts, difference of sailing, estimation of a ship's way by the log, and log-line, currents, & c. : compiled for the use of the mathematical school in Christ's hospital-London, His Majesty Charles II, his royal foundation (1682)

Perkins, Peter · London : Obadiah Blageave · leaf 368

An illustration from The seaman's tutor, explaining geometry, cosmography, and trigonometry : with requisite tables of longitude and latitude of sea-ports, traverse tables, tables of easting and westing, meridian miles, declinarions, amplitudes, refractions, use of the compass , kalendar, measure of the earth's globe, use of instruments and charts, difference of sailing, estimation of a ship's way by the log, and log-line, currents, & c. : compiled for the use of the mathematical school in Christ's hospital-London, His Majesty Charles II, his royal foundation, 1682, leaf 368
i " - §l ihe Tutor to Navigation. r ' - , . - \rv "i 0 N . * • ,• >¥ Geometry. Firft draw the North and South Line A … and taking with the Compares fixty degr from the Line of Chords, fet ( becaufe fails Southward; one foot in fome point wards the North on the faid Line A C, a: C, and defer ibe the Arch D E, and lay the on the Courfe two points, or twenty two rrees thirty minutes from EtoD, and di ; B. Secondly ,…

Navigation -- Early works to 1800 · Imprint 1682

Internet Archive · John Carter Brown Library · Public domain (published before 1931). Free to use for anything.

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