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 70
y shall range properly with the other raking centres. Note. All the body ribs must be ranged according to the rake of the groin; to do this exactly, theunder edges of all the ribs must be bevelled according to the rake; then make a mould as B, or one of thebody ribs themselves will answer instead… … Plate 19.
Carpentry
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