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 (1883)
Fig. 99. belnf)^ thickened at A. If the circle were thickened onthe other side as at B, in Figure 98, it would showthat it represented a cylindrical stem instead of a hole. In Fignrr- 99 is represented a n^asher, the surfaces 84 MECHANICAL DRAWING SELF-TAUGHT. that are in the shadow side being… … Fig. loo. Fi! lOI. Fig. while in Figure loi the shade line is shown appliedtoa nut. The shade line may be produced in straightlines by drawing the line twice over, and slightly in-clining the pen, or by opening the pen points a litde.For circles, however, it may be produced either byslighdy moving…
Mechanical drawing
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