Blessing, George F. (George Frederick), 1875-1921, Darling, Lewis A. (Lewis Andrew) · New York, J. Wiley & sons; [etc., etc.] · leaf 187
in isometric sketching are to be done on small sheets of standardletter size (8 X io|) heavy weight isometric-ruled paper (see§ 4, page 5), the ruling on one side only. The paper is to bepunched for standard No. 10 Manila cover. As previously stated,one of the disadvantages of making isometric… … ISOMETRIC DRAWING AND SKETCHING 167 objection to making isometric sketches is due to the difficulty ofmaintaining the thirty-degree angle. This difficulty can beentirely overcome by the use of isometric ruled paper, see Fig. i (b),page 5. This paper has, besides the regular vertical and hori-zontal…
Mechanical drawing
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