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 177
ll tides- 6 of an hexagon with fixe t quail fides, and fo 7 8t9, and 10, Jftav.ds for theScmidiamcterof a circle, and 9®for a line equal! to 90 gr. in the circumference, the ufe ofthem may be, 1 To make afijuare eqttaN to a circle givem 2 To make a circle equall to a fquaregiven. If the circle be… … If the fqture be ^iVeti take his fide, and to it open the S.i -#»r, in the points a- ^: fo the parallel! takei fro si bet wee ne.the points at ?, ihiU be the Seondia raster of the circle requi-red* Let the S?nv diameter of the circle given be A B, the fiderfthe fquire equal! unto ic (hiU be foa \d…
Astronomy · Puritans
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