Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments. Elementary instruction in practical mechanical drawing. Together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1889)
Shading by means of lines may be used with excel-lent effect in mechanical drawing, not only to distin-guish round from flat surfaces, but also to denote tothe eye the relative distances of surfaces. Figure 104 86 MECHAXICAL DRAW IXC SELF-TAUGHT. represents a cylindrical pin line shaded. As the… … Fig. 104. the stem, and of the collar or bead, hence those partsare shaded with lighter or finer lines than the right,hand sides are. Two cylindrical pieces that join each other may beline shaded at whatever angle they may join. Figure105 represents two such pieces, one at a right angleto the…
Mechanical drawing
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