The American house-carpenter; a treatise upon architecture, cornices and mouldings, framing, doors, windows, and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 64
i and I n ; this will complete the figure. When the axes are proportioned to one another as 2 to 3, theextremities, c and d, of the shortest axis, will be the centres fordescribing the arcs, i land m n; and,the intersection of e d withthe transverse axis, will be the centre for describing the arc,… … 121.— To draw an oval in the proportion, seven by nine.Let c c?, (Fig. 87,) be the given conjugate axis. Bisect c d mo,and through o, draw a 6, at right angles to c d ; bisect c o in e ;upon o, with o e for radius, describe the circle, e f g h ; from e,through h and/, draw e j and e i ; also, from…
Carpentry · Architecture
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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-300-196.webp)
