Machine drawing, a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1920)
Griffin, Charles Lewis, 1867- [from old catalog], Adams, Charles Clyde, 1882- [from old catalog] joint author · Chicago, American technical society · leaf 196
ing is necessary. A civil engineers finemapping pen, which gives character to his drawing, is not desirablein producing the bold character of a machine drawing. For the latter,choose a rather stiff, blunt pen which is not scratchy, but runssmoothly, making a line of uniform width. A pen with a… … Fig. 124. Section Showing Varia-tions in Crosshatching 184 MACHINE DRAWING hesitating uncertainty of the beginners hand produces a shakyletter, and going over a letter or figure twice or more to smooth itup usually makes it worse. Figures and letters which are broad in proportion to heightare…
Machinery
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