f the eye. Drawthe central diameters of the square,12,10 and 11,9. Divide these diam-eters into six equal parts, and numberas shown. With 1 as a centre and ra-dius IH draw an arc HK to meet a horizontal produced from2 through 1. With 2 as a centre and radius 2Kdraw the arc KLto meet a vertical… … GEOMETRICAL PROBLEMS. 53 The curve may be commenced by taking 12 as a centre andradius 12 A and drawing from without toward the centre. Prob. 110. To describe an Ionic volute. Let AB be the verticalmeasure of the volute. Di-vide AB into seven equalparts, and from C, the lowerextremity of the fourth…
Mechanical drawing
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