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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 221

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 221
face view, to tooth Lin the edge view, and it is obvious from what has beensaid that in drawing the lines for the tooth in the edgeview they will point to the centre E. 208 MECHANICAL DRAWING SELF-TAUGHT. To save work In drawing bevll gear wheels, theyare sometimes drawn In section or In outHne… … fWk 77/////7Z7^7777^^ |^<v^

Mechanical drawing

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