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<p>[QUOTE=&quot;Mr3dPHD, post: 603665, member: 18909&quot;]I see two problems with a home made scale, only because the difference in weight between the pennies is so minute. For one thing, the fulcrum (pen) has to be exactly in the dead center, otherwise it will not be accurate. For another, you would have to put the two pennies at percisely the same distance from the center or their center of gravity will not match up, skewing the results. Also, what if the two coins are made of the same composition (i.e. two copper coins)? Slight differences in desity will show that one is heavier than the other giving the illusion of a different material make-up. I would mostly be worried that it would appear to say one is heavier than the other, but it is really due to a slight inaccuracy in the scale. It certainly is a good method if you can manage to measure out everything though...and safer for your coins than the bounce method (which can obviously cause anomolies with your coin). I would test it for accuracy with the bounce method first to make sure you set it up properly though.[/QUOTE]</p><p><br /></p>

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