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 399
f thearkes abouc the horizon, both from thefe two parallels andthe aequator: and being continued vntoche tropiques, it fliallalfo cut ofFabout a twelfth part from them, and all the reft ofthe parallels of declination, without any fenfible error. In like manner may you draw the (econd vnequall… … A id of thcfe vnequall houres youhauea farcher examplein the diagram belonging ro the polar declining plane, Pag.130. CHAP. XVII. To draw the houres from Sunne rifinganlSnnne fetting in the formerPlanes. X O know how many houres are paft fince the Sun riling,or now many remainc to the Sun fetting ;…
Astronomy · Puritans
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