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<p>[QUOTE=&quot;desertgem, post: 24644213, member: 15199&quot;]Scales and Balances and all other various named weighing devices should come with a &quot;reference&quot; or&nbsp; &quot;calibration&quot;&nbsp; weight and instructions how to do it so &quot;0&quot; is really zero and .4 grams doesn&#039;t show .3 grams or .5 grams due to calibration error range. Drop the scale on a surface, be sure to re-calibrate</p><p>&nbsp;&nbsp; &nbsp;&nbsp; The ones with x.000 grams devices are more than accurate for coins as a variation is in the mint variations of known ranges. If you are doing diamond , ruby, etc. gemstones cutting, A 0.0000 is desired.&nbsp; My old college has one that goes to 5 zeroes after the decimal for certain chemicals and outcomes, but it is in the 20,000+ range.</p><p><br /></p><p>&nbsp;&nbsp; &nbsp; 500 grams is approx. a US pound. Such a scale is designed for peaches, not coins or precious metals. IMO, Jim[/QUOTE]</p><p><br /></p>

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