Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 163
ntric circlemethod (Fig. 49). Major axis b. Minor axis 2. Find 24points. 57. Space b^/2 X 1. Draw an ellipse by trammel method(Fig. 50). Major axis b^/^. Minor axis 2^/^. 58. Space b^/2 X T. Draw a figure having the appearanceof an ellipse by circular arcs, Fig. 51. AB = b, CD = 2^/^. 59. Space… … /^/gr. s^s F/g. S^?^
Mechanical drawing
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