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<p>[QUOTE=&quot;desertgem, post: 22376996, member: 15199&quot;]I think it is important to have enough sensitivity to measure .001g at the least. A .0001g is better if you are working with tiny amounts of valuable substance ( such as gemstones or gold dust). I do not know the price of the one shown, but it has a &quot;wind&quot; shield as even a wisp of air we would not detect such as breathing could cause a misreading. The weight standard is there also to re-calibrate it after you drop it or drop a kilo of something on it. Tongs also are provided. The device is battery charged , so if the weight standard reads wrong after a time , change the battery before re-calibrating it, but if it doesn&#039;t read the standard correctly, change the batteries and re-calibrate ( the directions should be with the device. Use the weight standard before weighing any important object. Jim[/QUOTE]</p><p><br /></p>

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