Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 54
e rightthickness of line. A piece of chamois leather or rag should be DRAWING STRAIGHT LINES, 51 kept handy to wipe the outsides of the nibs in case of ink beingthere, because if ink be allowed to get on the outside of the pen,a blotted line will be the consequence. Now hold the drawing - pen as… … Fig. 8!{.—How to Hold a Ruling Pen. Fig. 81), begin with the thinnest, then with the middle finger, asshown in Fig. 82, turn the screw of the pen back, say, about aquarter of a revolution for each of the others, the last openingbeing about the right thickness for the border line. As theborder line…
Mechanical drawing
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