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 30
Fig. 17 … Fig. 18 28 A PRACTICAL COURSE IN Exercise ip.—Pentagon. Construction: Base ij4-i5^-With one radius = to the base length describe arcsfrom centers i, 2 and 3. Connect i and 2 with 7 and8 and complete the pentagon. Inscribe a circle within
Mechanical drawing
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