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<p>[QUOTE=&quot;saltysam-1, post: 1908435, member: 23368&quot;]First off it won&#039;t be off it&#039;s minimal unit, not if it&#039;s digital. You are thinking of the old mechanical scales. Any error in calibration would even make the coin dealers scale off. In fact, it would make the most expensive precise instrument in the world off if calibrated wrong. The scales are calibrated electronically, by computer, to take human error out of the picture. A good jeweler&#039;s scale can even measure dust and should be cleaned each time it is used.[/QUOTE]</p><p><br /></p>

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