Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 131
insf lines or edges wlTieh are invisible aredrawn dotted. Tl.e edges which in projection form a part of theoutline or contour of the fifjure must alwavs be visible, hencealways/it?? lines. The plan shows what lines are visible in eleva-tion, and the elevation determines what are visible in plan.… … Fig. 10, 102 MECHAXICAL DRAWING. n if ill elevation an edge projected within the figure is a back edo-e,it must be dotted, and in plan if an edge projected within theoutline is a lower edge it is dotted. Fig. 12 is a ci:cul:ir cylinder with the length vertical and
Architecture · Building · Carpentry
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