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)
/) A /yA / X … Fig. 231 a. width of the ellipse, hence we have four of the points\marked respectively i, 2, 3, 4) in the ellipse. To ob- PROJECTIOXS. IQI tain the remaining points, lines /, u, v, w, x, y (whichstart from the point on the face F where the Hnes m,n, o, p, q. r, respectively meet it) are drawn…
Mechanical drawing
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