The abacus was an invention from ancient China that uses a system of counting that predates even modern numbers and is still used by some businessmen, traders, and clerks today since it is very suitable for fast calculations.
13 digit professional soroban style abacus with plastic frame. Beads Number: 5 Beads Per Row x 13 Rows
Measures 8" x 2.5" x 0.75" (20.5cm x 6.3cm x 1.5cm)
A great mathematic tool that is both practical and educational: This standard set is perfect for practical use as well as teaching children (Instruction not included)
It can be used as a classic office calculator, an educational tool for children or a gift for abacus collectors.