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08-03-2011, 03:27 PM
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#11 |
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Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
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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. |
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