A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 102
circular ventilator projects, througha gambrel roof as shown in Fig. 104. Work out theline of its penetration wnth the roof planes. Developthe ventilator top and also the roof planes, showingthe line of penetration. Scale i = 1^0. Problem 11.—Develop a truncated right cone fromthe illustration.… … Fig. 101
Mechanical drawing
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