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 47
The figures of interlacing lines are best made by sketchingthe whole in very faint ^ and tinbrohen lines, at first; after whichthose portions of each line, which are meant to be visible, canbe retraced in firm and heavy strokes. I). … Aa»^Y<i jt I 1 B. ■^-^ J»l.. I
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
