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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 99

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 99
Fig. 129. order to show the hexagonal form. Another exampleof this kind, which occurs more frequently in practice,is a cupped ring such as shown in Figure 129. EXAMPLES. Let it be required to draw a rectangular piece suchas is shown in two views in Figure 130, and the pro-cess for the pencil lines…

Mechanical drawing

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