Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 253
top over a corresponding one at the base.The ordinates, n x and r s, in those figures, correspond to n xand 7- s in Fig. 286 and 287. In Fig. 288, the top, e a, forms a right angle with the face, dc ; all that is necessary, therefore, in this figure, is to find a linecorresponding to h x in the… … Fig. 288. r to e c on the top. This ehicidates Fig. 276 ; at which the lines,h 9 and i 8, correspond to h 9 and i 8 in this figure.
Carpentry · Architecture
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