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 82
nd fig :then move your brad awl out of g, and stick it in the crown at^ and strike lines from thedivisions of m p to cross the other lines, will give the points through which the arch mustpass; but the reader must recollect that four or five points will not be sufficient in the prac-tice for… … Ihik 23..
Carpentry
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