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<p>[QUOTE=&quot;ascot, post: 324173, member: 96&quot;]Can anyone tell me what these glass standards were used for? (Frankly, I&#039;m not even sure what they are, exactly.) </p><p><br /></p><p>So we have a little black box with 6 pieces of glass, 5 square, 1 round. (white spots on the glass are from ceiling lights...sorry.) The thickness varies&nbsp; - the bright red/orange (lower left) is the thinnest and they graduate up in thickness. Each one has a tiny number on it, the red/orange one being NSB 2101 29, and the 4 numbers in the center graduate upward (2101, 2102, etc). There&#039;s also a card with information about the thickness in MM, then Cap X, Cap Y, Cap Z, and then X and Y.</p><p><br /></p><p>The round glass may or may not be part of the original set. It isn&#039;t numbered but does have an old Corning label that says Diaymium 5.06MM No. 512.</p><p><br /></p><p>If anyone can tell me what standards these would have been used for or any other info, I&#039;d appreciate it!</p><p><br /></p><p>Thanks so much!</p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_247b.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2489.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2481.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2482.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2485.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2483.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /> </p><p><br /></p><p><img src="http://imgs.inkfrog.com/pix/Ascot/fullsizeoutput_2484.jpeg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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