I had inspiration for this thing from https://www.cointalk.com/threads/a-guide-to-1982-lincoln-cent-identification.55647/
My family is collecting coins and couldn't find a way to determine easily which 1982 pennies are 95% copper and which ones were mostly zinc. This balance will solve that issue. Place a 1982 penny onto the scale and if it tips it is a copper penny. If it rests in the air, it is a zinc penny. There are two photographs showing an old 1964 penny and a 2014 penny as examples. Everything that is 1981 and below for Lincoln cents are copper (except war pennies). Everything that is newer than 1982 is mostly zinc. Enjoy collecting again!