Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing (1878)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 162
atest width of the oval. The standard is composedof nearly the whole of the outline of the more convex half, %(?i,of the same oval. The Method hy Co-ordinates. 93. Compound, or waving curves may be sketched by amethod suggested by that of finding the location of a stream, orother irregular line, in… … But in applying this method to the free design of some idealline of beauty, we are no longer bound by given distances eitheron, or from ah^ but can, according to the principles of this PartIII., substitute angular ratios for them. Thus, in Fig. 32, the left hand profile. A, is determined…
Geometrical drawing · Mechanical drawing
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