The description and use of the sector, crosse-staffe, and other instruments : with a canon of artificiall Sines and Tangents, and the use thereof in astronomie, navigation, dialling and fortification .. (1636)
Gunter, Edmund, 1581-1626 · London : Printed by William Iones for Iames Bowler · leaf 100
gr; and the halfc arke4? £r f^e femidiamiters arc to be divided in fuch fort asthe tangent of 45 gr. as was (hewed before in the fecondproie&ion. And if from Z we draw circles through each of OftbeProitTm of the Sphxre. 77 of chafe divifiois, they (hill be parallels of altitude. Then having… … m / M- \ \ > {Ball there give the pole of the world, and po furtherfrom P fhall there give the other interfeftion of the me-ridian and arquttor. L 3 Ths 7S Of the pou&itn cf the Sfare The, tniddle betweene thefe intef factions frail be *Athe center of the equator, pafllrg through 8 and…
Astronomy · Puritans
Internet Archive · Princeton University Library · Public Domain Mark 1.0. Free to use for anything.
