Description
- East Abacus - Soroban. Very popular.
- Current standard type
- birch ball, ebony frame / 130.62.5 (inch) / 5.7 (oz) / Japan Import
- 1 ball (having a value of five) and 4 balls (having a value of one)
Made with the best materials and traditional techniques, this standard is widely used in school and workplace.
It is very easy to use and can be used for a long time.
The top frame has a triangular ruler, making it convenient for drawing lines.