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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 79

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 79
W/^/M Fig. 89. inner ones being fastened together by a screw whichis shown dotted in in the end view, and whose positionalong the pieces is shown in the side view. Theedges of the fracture in the outer piece are in this casecross-hatched, to show the line of fracture. In cross-hatching it is better…

Mechanical drawing

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