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 44
r—y ^ NT—^ >—i>—<>—i>—i>—o—i>—i>—i ki ^ A. X i examples obviously require the divisions of lines into equal 30 FBEE-HAND GEOMETRICAL DRAWING. parts. Also, in the second figure, the marking of (jqnal dis-tances, viz., the semi-diagonals of the little squares. Ex. 81. Embraces…
Geometrical drawing · Mechanical drawing
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