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 92
METRICAL DBA WING. knot, or crotch pieces, an essentially straight grain ; second^with strict reference to its structure in this respect. Thesedifferent ways give rise to two corresponding parties relativeto ornamental design in wood. The one, treating it as if itwere plastic, or like marble,… … The other party claim that wood should be treated strictlyaccording to its nature, that is in straight pieces running withthe grain. Thus purely angular, not curved, geometrical workis produced, as seen very simply in the straight backed chairsof our grandfathers, and more elaborately in what is…
Geometrical drawing · Mechanical drawing
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