As for accuracy, yes the coins work well. Just make sure you use the newest available coin since time and use usually equal wear. And they have changed weight of the penny quite a few times in recent history.
budlover13 Reviewed by budlover13 on . Quick way to test a scales accuracy. I've been think about this for a while.. How do I know my scale is accurate? How do I know my dealer's scale is accurate? These can be tough questions. It's really impossible to know unless you weigh something that has a known weight value such as a calibration weight. Well what do we know the weight of? There's not much. I searched my apartment for quite a while trying to find something I knew the weight of. Well I finaly figured it out. A US QUARTER!!!!! I can look up the weight of a Rating: 5