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 29
s are to be perpendicular toeach other at common angles, such as30 deg., 45 deg. and 60 deg., the problemis simple, and may easily be seen by refer-ence to Fig. 27. The line A B is drawn at 30 deg. with G H will be the line desired. This latter statement may often be putto use, as we may see from… … The Main Pipe Drawn With a Tee Square- the horizontal, and can be obtained sim-ply by drawing a line along the edge ofthe 30 deg. triangle placed against the teesquare. To obtain a line at right anglesto A B just reverse triangle No. 1 to the -Lines of Branch With 45 Degree Triangle. at an angle of…
Plumbing · Mechanical drawing
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