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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 184

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 184
ill fl . I I^-441— / / / r—- y / / I I I Ila...-- / / / / // ./ // / / r Fig. 225 «.portion of the spiral or thread is hidden, namely from J So MECHANICAL DRAWING SELF-TAUGHT. lines I to 13 inclusive, being an equal proportion tothat hidden in the left-hand view. The top of the cylinder is shown in…

Mechanical drawing

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