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 . Ex. 113. An exercise of peculiar utility, is found in sketchingeasy curves through several given scattered points. This opera-tion frequently occurs in geometrical drawing, when other than.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmechanicaldrawing