Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 157
39. straight line, and is thei-efore the section from which we mustwork in developing other sections. As B has neitlier end at rightangles to its length, the plane X is drawn at the middle and pev-jtendicular to tlie length. B is the same diameter pipe as C andA, so the section cut by X will be a…
Architecture · Building · Carpentry
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