17 digit professional soroban abacus is a sturdy abacus set made to stay put, measuring in at 10.5 x 2.5 x 0.75 in (26.5cm x 6cm x 1.5cm).
GREAT EDUCATIONAL TOOL: When learning on the abacus, math practice can be more effective because you may remember more. This makes using an abacus for kids math a great way to teach them how to count and equate and is widely used this way.
