The technic of mechanical drafting a practical guide to neat, correct, and legible drawing (1904)
Reinhardt, Chas. William (Charles William), b. 1858 · New York, The Engineering News Pub. Co. · leaf 30
3d. 1st. 2d.Fig. 50. tion. As will be noticed, the strokes in the first stage are made tap-ering downwards and placed closest. Earth filling (Plate III.) 26 … can be shown by disconnected parallel-lined bunches interspersedwith dots, showing a generally broken-up texture. In drawing thesymbol for bed rock it will first be necessary to throwin the heavier dividing lines, indicating seams, beforethe actual filling-in can be commenced. Make thosetapering,…
Mechanical drawing
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