Sharpened Pencil
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The lead can be sharpened to a chisel edge by rubbing it against a bit of sand paper or a fine file, and the corners slightly rounded.
Galleries
Mechanical Drawing ToolsSource
Kenison, Ervin Mechanical Drawing (Chicago, IL: American School of Correspondence, 1916)
Downloads
394×2400, 432.8 KiB
168×1024, 42.6 KiB
105×640, 22.2 KiB
52×320, 7.9 KiB