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Looks that way. Possibly it's essentially the same thing as this: http://www.amazon.com/Jac-Zagoory-Beta-Inkless-Pen/dp/B005GLYHLG/ http://www.amazon.com/Jac-Z

Looks that way. Possibly it's essentially the same thing as this: http://www.amazon.com/Jac-Zagoory-Beta-Inkless-Pen/dp/B005GLYHLG/ http://www.amazon.com/Jac-Zagoory-Beta-Inkless-Pen/dp/B005GL... EDIT: Not quite. Apparently the tip of that pen is lead, while the one in this post is some kind of alloy. Same idea, though, I imagine: soft metal that rubs off much like a pencil.

stan_rogers 13y ago
Doesn't have to be particularly soft. Coin silver wire (2mm to fit standard draughting leadholders) is "normal" for the silverpoint drawing technique, and there wouldn't be a whole lot of sharpening involved if super-fine cross-hatching wasn't one of the expectations ("scumbling" a duller wire will also achieve shading).