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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 514
a fquare fort, the fide was 700 foot, the Gorge 140,the Fianque 100, and the Face 335: In a Pentagonall 5 hexa-gonall, heptagonall, as in this table. Thefide7hegorgeThe flan queThe face ABAT>BEEF J jQuadr\Pentag 700 I 800140 J loo 335 180120352 Hexag poo190140370 HeptagOtlag.9$o 1000 2003<fo… … Firft wc may protracl this Fort,by making a fquare whofcfide A B (hall bee 700 foot by the fcale: then take but 140 forthe gorge, and fet them of from A vnto D, and from A vn-to H» At D and H raife 2, flanques perpendicular to the fides©fthefort and there prickeoowne loofromD vnto E, andand from H… Astronomy · Puritans
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