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The Description and Use of the Sector (1624)

Gunter, Edmund · leaf 297

An illustration from The Description and Use of the Sector, 1624, leaf 297
gr.%% m. the diftance of the fub-ftylar from the meridian, and infenbe it into this circlefrom H vnto A, according as I finde the proper meridianP Tto fall in the fundamental diagrarn3and there I draw theline CA feruing for the fubftylar, q 3 3; Ang.Po. Arc.PJa. 0 5rTTS7 gT~mT II 77 *5 66~~^ 12 6z… … 4 The fubftylar being drawne, I may inferibe the chordsof the arkes of the plane from the fubftylar, and draw thehoure-lines^and fet vp the ityle,as in the former planes. CHAP. IX. To draw the houre-lines in a polardeclinmgTlane. Hofc planes wherein a line may be drawne parallell tothe axis of the…

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