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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 287

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 287
the copper plate,the shading is virtually composed of lines, the blacksurfaces being where the lines have been sufficientlyclose toeether and broad to remove all the wax en-closed within those surfaces. The wax process is, however, more suitable for en-gravings in plain outline only, and is… … Fig. 297. EXAMPLES IX LINE-SIIADIXG. o?!

Mechanical drawing

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