Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 60
the tangents set off the number of parts corresponding to thenumber of the radii. Tangent 12 will then be the circumfer-ence of the circle unrolled, and the curve drawn through theextremities of the other tangents will be the involute. E[°b- 52* To Describe an Ionic Volute.—Divide the r iff. * * •…
