Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 547
is Stt x radius,the radius will be 573°. Draw the line CA = 57-3°. With C as centre, and radiusCA, draw a quadrant till it meets a perpendicular on C in B. 526 SOLID GEOMETRY Divide this quadrant into nine equal parts, and figiire themfrom O to 90. Produce the arc of the quadrant from A to E, and… … Fig. 304. and meeting it in h. From the centre C draw the arc AG-. Thisis the plan of the arc of 70° latitude. At A draw a perpendicular to CA, and make Ac equal tothe arc AE (Prob. 192, Plane Geometry). Draw ef parallel toAC. These two lines will represent the distance of 20° apartof the meridians…
Geometrical drawing
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-265-170.webp)
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