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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)

Rose, Joshua · Philaelphia, H.C. Baird & co.; [etc., etc.] · leaf 85

An illustration from 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, leaf 85
Fie Fii Fig. 102. while in Figure 101 the shade line is shown appliedto a 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 little.For circles, however, it may be produced either byslightly moving the…

Mechanical drawing

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