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<p>[QUOTE=&quot;Conder101, post: 2007150, member: 66&quot;]If you are careful with your weighings, and make sure you don&#039;t trap any air bubbles on the coin when you get your wet weight you should be able to tell them apart by SG.&nbsp; I would use a scale accurate to at least two decimal places and only trus your SG results to one place.&nbsp; If your scale is more precise (three places or more you might be able to get the SG to two places.&nbsp; As the precision increases though you have to start making allowances for air currents and shield the scales, and you also have to start having to control the temperature of the air and water.[/QUOTE]</p><p><br /></p>

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