The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 46
e transferred to a straight line. This is a very useful pro-blem, and should be well studied; as it is frequently used tosolve problems on stairs, domes, &c. 92, a.—Another method. Let a bf c, {Fig. 53,) be the given circle. Draw the diameter, ac ; from d, the centre, and at right angles to a… … Fig. 53. many uses. The result is a trifle too large, If the circumfer-erence found by this rule, be divided by 648*22, the quotientwill be the excess. Deduct this excess, and the remainderwill be the true circumference. This problem is rather morecurious than useful, as it is less labor to perform…
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-192-110.webp)
