Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 262
he rule, then,for taking these points, is to take in each section the one that isnearest to the line, g p. Sometimes the line of intersection, g p,happens to come almost in the direction of the line, er : in suchcase, after finding the line, see if the points from which theheights were taken agree… … Fig. 297. 394.— To apply the face-mould thus found to the plank.The face-mould, when obtained by this method, is to be appliedto a square-edged plank, as directed at Art. 383, with this differ-ence : instead of applying both tips of the mould to the edge of 248 AMERICAN HOUSE-CARPENTER. the plank,…
Carpentry · Architecture
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