As noted many times previously, You do not need a scale to find one. All you need is a popsicle stick and a pencil. Balance the stick on the pencil, glue in place. You now have a balance beam scale. Place any post 82 penny on one far end and any other penny on the other end. If it ballances, it is Copper. If no balance, not Copper.
Simple and cheap and fast.
Simple and cheap and fast.





















