Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 136
\ draw horizontal lineslying in the plane chf, for which o^p^ is a line of measures. Theselines will vanish at t\ and intersect the vertical edge h^f^ of theblock. From these intersections draw horizontal lines lying inthe plane ahif, vanishing at v^, and representing the upper andlower edges of… … the square. This construction has been indicated, and the studentshould follow it through. 59. It sometimes happens that no line in the object lies inthe picture plane. In such a case there is no principal line ofmeasures, and some vertical j^lane in the object must be extendeduntil it intersects…
Architecture · Building
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