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, etcIn three parts ..for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing . 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» I

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License: Licensed
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmechanicaldrawing