Posted 7 years ago
Silver on one side for subtraction and division. Gold on the other for addition and multiplication. I think this is some early form of calculator, but i can't make heads or tails out of it. The top pulls up which makes the numbers move, but they are so small that i can't even read them. This thing probably would have helped me in grammar school, but now it's just an ancient relic. kind of cool though... i'm not even sure what category it falls under.