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Soroban Abacus Size - 13 positions: 20 6.3 1.5 cm (7.9 2.4 0.5 inches); 17 positions: 26.3 6 1.5cm (10.3 2.3 0.5 inches). Traditional abacus, a classic tool that can still be used normally.
Use Range - A good tool for math education. Can be used as a classic office calculator, an educational tool for teachers or a gift for abacus collectors
Ideal Educational Tool - Abacus to make math exercises more effective; using an abacus to calculate children’s math ability is a good way to teach them how to count and calculate intelligence
Beautiful and Unique Design - A good gift for children. Soroban style abacus is very suitable for fast calculation. It is strongly recommended to use it in any Math abacus/Soroban course.

Ideal Educational Tool -Abacus to make math exercises more effective-Using an abacus to calculate children’s math ability is a good way to teach them how to count and calculate intelligence Beautiful and Unique Design A good gift for children.Soroban style abacus is very suitable for fast calculation. It is strongly recommended to use it in any Math abacus / Soroban course.Popular Use for : Soroban, Teacher, Students, AccountingSpecificationMaterial : PlasticColor : BrownPackage Weight : 0.125kgSize : -13 Digit - 20 6 1.5 cm (7.8 2.3 0.5in)-17 Digit - 26.5 6 1.5 cm (10.4 2.3 0.5in)Package Including : 1Pc x AbacusNote-Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon. -And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!