The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 135
man-tle-shelves. The tangent, i h, is found thus : bisect the line, a 6,at c, and b c aX d; from d, draw d e, at right angles to e b ; fromb, draw b /, parallel to e d ; upon b, with b d for radius, describethe arc, df; divide this arc into 7 equal parts, and set one of theparts from 5, the limit… … Fig. 162.
Carpentry · Architecture
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