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)
are working drawings of a couplingrod, with the dimensions and directions marked in. It may be remarked, however, that the drawings ofa workshop are, where large quantities of the samekind of work is done, varied in character to suit somespecial departments—that is to say, special extra draw-ings… … Fig, 218.
Mechanical drawing
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