23 Digit Rods Chinese Japanese Calculator Counting Standard Abacus Soroban

●23 digit professional soroban style abacus with plastic frame.
●Recommended age: 3 years and up
●Both practical and educational. (Instruction not included)
●"Reset" Button, easy to reset the calculation

Introduction:
The abacus was a calculator invented sometime between 1000 BC and 500 BC in China, often constructed as a wooden frame with beads sliding on wires. It was in use centuries before the adoption of the written Hindu-Arabic numeral system and is still widely used by merchants and clerks in China, Japan, Africa and elsewhere. The abacus is also widely used in teaching counting and mathematics. This standard set is perfect for practical use as well as teaching children.

Description:
Material: Plastic
:
Beads Number: 5 Beads Per Row x 23 Rows
Size: 13.6" x 2.5" x 0.75" (34.5cm x 6.5cm x 1.5cm)

Package Included:
1 pcs x Abacus

Notice:
1.Please allow 2-4mm error due to manual measurement.Pls make sure you do not mind before you bid.
2.The may have different as the difference display,pls understand.






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