Shop sketching, a course of problems for mechanical drawing students (1919)
Windoes, Ralph Flagg, 1890- · Milwaukee, Wis., The Bruce publishing company · leaf 33
Figure 13 , The Circle in Perspective None of the previous plates have contained cir-cles or arcs of circles. This feature of the work willnow be considered. All perspective circles are in the form of theellipse. Figure 13 shows how they are formed on the Figure 12 SKEITCH Of^ .^C.^RF- L/Q//VT \ t…
Mechanical drawing
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