Mechanical drawing for plumbers; a concise, comprehensive and practical treatise on the subject of mechanical drawing (1910)
Starbuck, R. M. (Robert Macy), 1844-1927 · New York, The Norman W. Henley publishing co. · leaf 27
oit. To do this, place one of the trian-gles in the position which No. 1 has,with one of its edges matching up withthe line AB. Then place another triangleNo. 3 against No. 1 triangle, as shown.Now, holding triangle No. 3 firmly inplace, move No. 1 along to a second posi-tion, shown by No. 2, when… … 25, the two triangles are placed different-ly, but the lines E F and G H can bedrawn parallel in just the same manner.This method of drawing parallel linesshould be kept in mind, for it is thepractical way of doing such work. CHAPTER V THIS method would be made useof in representing runs of pipeat…
Plumbing · Mechanical drawing
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