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)
s is shown in Fig.ure 89, where in the top half the diagonals slightlyoverrun, while in the lower, half they ([o not quit(.meet tlie oudines of the piece. In Figure 90 an^ shown in section a number otpieces one within tlic other, tli< < .-niral bon^ bein^- SHADOW LIXES AXD LINE SHADING. 79… … Fig. 90. agonals, an almost infinite number of pieces may beshown in cross section without any liability of mistak-ing one for the other, or any doubt as to the form andarrangement of the pieces; for, beside the differencein spacing in the cross-hatching, there are no two ad-joining pieces with the…
Mechanical drawing
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