The sheet-metal worker's guide : a practical handbook for tinsmiths, coppersmiths, zincworkers, etc., comprising numerous geometrical diagrams and working patterns, with descriptive text (1888)
Crane, W. J. E. (W. J. Eden) · London : Lockwood and Son · leaf 99
87 DOME COVERS. curve drawn througli their terminations, 1, 2, 3, and 4, on both sides will give the outline of the course. To cover a dome hy the first method. Let ABC (Fig. 88) be the section of a dome. Draw the axis d produce to J ; divide the curve … Fig. 88. of one-half the figure into equal parts, as efg and H, the width of these divisions being th t required by the metal with which the dome is be covered ; produce a e, e f, eg, g h, and h b severally, until they intersect at the axis, b d ; then (for example) from the point i, with the…
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![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-187-104.webp)