The carpenter's new guide: being a complete book of lines for carpentry and joinery (1848)
Nicholson, Peter, 1765-1844. [from old catalog], Johnston, William, architect. [from old catalog] · Philadelphia, Grigg, Elliot and co. · leaf 73
Plate 19. … CRADLING TO GROINS. 31 PLATE 19. Given the two side Arches of any Groin, and the Inclination, to find the Intersection of the Angles upon the Plan. Divide half of the body rib B into equal parts, and draw parallel lines to b, c, d, e and/;and from the point a, as a centre, draw the concentric…
Carpentry
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