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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 (1883)

Rose, Joshua · Philadelphia, H.C. Baird & Co.; London, S. Low, Marston, Searle & Rivington · leaf 125

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, 1883, leaf 125
ts head, as in Figure 163, may begiven. It is the better plan, both In square and hexagonheads, to give the view In which the full face of a flatIs presented, that Is, as In Figures 155 and 163; be-cause. In the case of the square, the length of a sideand the width across the head are both given In… … Fig. 162, Alt iMg. 163. llli across corners. In the case of a hexagon the EXAMPLES IN BOLTS, NUTS, AND POLYGONS. 125 middle of the three flats is equal in width to the di-ameter of the bolt, and the other two are one-half itswidth; all three, therefore, being marked with the sameset of compasses as…

Mechanical drawing

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