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<p>[QUOTE=&quot;desertgem, post: 2745889, member: 15199&quot;]The calibration weights are very necessary to maintain accuracy. If you live near a college or university with a chem department, ask if they will weigh your cal. weight on one of their .0001 or better balances. Most will do it&nbsp; as a good relation gesture and it only takes a few minutes. Usually the provided weights are only a smidgin off. Mine were .00007g&nbsp; off on their best $10 grand balance. Probably due to plating thickness, but darn impressive for mass produced calibration wts.[/QUOTE]</p><p><br /></p>

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