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 103
In s Refill0 fid» , , ■ C Tofindc the baft, htb fides fangpvt*. tF … Let the Seftor be opend in the line oWines to a right angle,( as before was {hewed (ap. 2* ?™p»7*) then take oik the(ides of the trianglc,and lay them, one on one //»<?, the otheron the other line, To as they meete in the center, & markehow farre they extend.For the line taken from…
Astronomy · Puritans
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