Blessing, George F. (George Frederick), 1875-1921, Darling, Lewis A. (Lewis Andrew) · New York, J. Wiley & sons; [etc., etc.] · leaf 36
gle of about 15° and filethe end of the lead awayuntil pointed. The pencilpoint should then appear as shown in Fig. 12. A few strokes across the file at frequent intervals will keepthe pencil lead in good working condition, and the long slopeof the lead saves cutting away the wood every time the… … Fig. II. —Pencil sharpened to LeadCylinder only.
Mechanical drawing
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