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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 192

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 192
v, w, x, yy are points in the curve. It will be observed, on referring again to Figure 229,that the branch or cylinder B appears to be of ellipti- PR OJECTIONS. ! 37 cal section on its end face, which occurs because it isseen at an angle to its end surface; now the method … Top View Fig. 230. of finding the ellipse for any given degree of angle is iSS MECHAXICAL DRAUIXG SELF-TAUGHT. as in Figure 231, in which B represents a cylindricalbody whose top face would, if viewed from point I, ap-pear as a straight line, while if viewed from point J itwould appear in outline a…

Mechanical drawing

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