A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 81
8 9 10 C To describe a Pattern for a T Pipe at any Angle.—Drawthe line AE (Fig. 73); erect the line AB, the anglerequired ; also, the line ED parallel to AB; make BDequal to the diameter of the Pipe ; describe the semicircleBCD; draw the line FG parallel to BD; divide the semi-circle into any… … P^- 73- Set off the line iBC (Fig. 74) equal in length to thecircumference of the Pipe; erect the lines AE, BD and
Metal-work
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