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)
thstanding the scant place. Thiswill lead to no errors in large work, because suchwork is marked out by lines, and the scant part willtherefore be discovered by the machinist, who willline out the piece accordingly. Figure 223 is a drawing of a locomotive frame,which the student may as well draw… … smaller scale, or to find a minute fraction of a given 1-6 MECHAXICAL DRAWIXG SELF-TAUGHT. dimension, such fraction not being- marked on thelineal measuring rules at hand. Figure 224 repre-sents a scale for finding minute fractions. Drawseven lines parallel to each other, and equidistantdraw…
Mechanical drawing
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