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 333
t of thehoure-line from the meridian^ Thus in the latitude of 51 gr. 30 m. I extend the com-pares from the fine of 90 gr* to the fine of 38 gr 20 m, and Sf find ■i. •>. I j 8 The dtfiriptiw oftht hwrt-!i*{s iit i verticil Phne. find the fams extent to reach froai the tangent of i$ gr. tothe… … Thefe arks being knotvne, I may come to the plane, andthere by help of a thread and plummet draw a vcrticall liiieferuingboihfor the meridian and thehoureof 12, andthefubftylar;then may I draw an occult verticall circle, andthere in inicribethc chords of thofe former arks, and draw the X2p ?he…
Astronomy · Puritans
Internet Archive · Princeton University Library · Public Domain Mark 1.0. Free to use for anything.
