Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 79
Fig. 131.—Another Approximate Method of Drawing an Ellipse. prepare a slip of writing or drawing paper (Fig. 133) with oneedge quite smooth and even ; make a mark on this edge nearone end, and sketch a hand pointing against the mark. Then … Fig. 132.—Drawing Ellipse with Paper Trammel. measure off a distance equal to the semi-diameter a b and makeanother mark, putting a against it ; next measure off from thesame point a distance equal to the semi-diameter b c, pu^^^ting bagainst it. This paper trammel is now complete, and nady…
Mechanical drawing
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