Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 246
the vari-ous distances to points 2, 3, and 4 and place them on correspond-ing lines measuring from the line c d on either side, thus obtaining 19b SHEET METAL WORK 127 the intersections 1^ to 4°, a line traced through these points willbe the true section. In (Y) on any line as O P lay off the… … Fig. 138. usincr 4^ at the left, as center with 4° e as radius, describe the arcc 4^, intersecting it at 4^ by the vertical line drawn from 4^. FromO P erect vertical lines intersecting; the line drawn from 4-^ to 4^at 3^, 2^, 1^, etc. 4^ 4^ is the true stretchout, and should beplaced on the line…
Architecture · Building · Carpentry
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