The abacus is a tool for counting. The abacus beads arranged in strings are used as calculation tools. The strings of equal numbers of abacus beads arranged in a rectangular wooden frame are called files.
- I'm a product detail. I'm a great place to add more information about your product such as sizing, material, care and cleaning instructions. This is also a great space to write what makes this product special and how your customers can benefit from this item.