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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 22

An illustration from 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, leaf 22
SMS THE FIRST BO ORE OF THE SECTOR. CHAP, t, Tfadefiriftion9 the making, andthegenerall vfe oftheSc&or. … Setior in geometric, is a figure com-prehended of two right lines contain-ing an angle at the center > and of thecircumference aflumed by them. ThisCjeomttric all instrument hauing two legscontaining all variety of angles, and thed rtance of the feete, reprefenting the fubtenfes of the…

Astronomy · Puritans

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