Practical carpentry, joinery, and cabinet-making : being a new and complete system of lines for the use of workmen, founded on accurate geometrical and mechanical principles ... / by Peter Nicholson ; revised by Thomas Tredgold (1853)
Nicholson, Peter, 1765-1844, Tredgold, Thomas, 1788-1829 · London : Thomas Kelly · leaf 46
circle. With the radius OC, andcentre O, describe the arc ACB, which is the portion of acircle required 3. Second Method.—When the distance of the centre is verygreat, a portion of a circle may be described by means of an angle. Let AC (pi. I, fig. 1,) be the length or chord-line, and DB the… … PRACTICAL CARPENTRY. correctly to the same angle. To describe the curve, begin with the angular point B, at A; andmove the triangle, so that the side BE may always be against the point A, and the side BFagainst the point C ; then a pencil held at the angular point B, will describe an arc of a…
Carpentry · Joinery · Cabinetwork
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-174-17.webp)