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glatt · 08-03-2011, 03:27 PM

The curve looks like it matches the curve of an eyeglasses lens. The notch is all black and marked, like it fits into something like a vise.

So I'm going to guess that it's some sort of jig for holding or grinding eyeglass lenses.

08-03-2011, 03:27 PM	#2
glatt ™ Join Date: Jul 2003 Location: Arlington, VA Posts: 27,717	The curve looks like it matches the curve of an eyeglasses lens. The notch is all black and marked, like it fits into something like a vise. So I'm going to guess that it's some sort of jig for holding or grinding eyeglass lenses.