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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 61

An illustration from 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, leaf 61
utline at the base. The up-per side-rhombus, with its angle of 18°,side of one in the central rhombus of60D, gives the comparatively complexand unfamiliar ratio ■£$. Also its righthand corner is arbitrarily located on a horizontal line through the upper vertex of the central rhombus.In both of… … 40 FREE-HAND GEOMETRICAL DRAWING. rhombuses, having a diagonal in common, the beautiful eggshaped curve will be formed, thus:

Geometrical drawing · Mechanical drawing

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

More pictures from 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

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