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East Abacus - Soroban. Very popular.
Push the botton - set each balls to the starting position speedy
birch balls / 13×0.62×2.75 (inch) / 6.5 (oz)
with hard case
Japan Import Product
Handle the number
Number - this is the common concept. Abacus is the general term of traditional tool to handle number. This is able people to handle number more easily. So, this is the "common" also. Actually, similar tools have been used all over the world.
What's Soroban ?
Soroban is a kind of these tools (Abacus). Especially, these in East Asia are called "Soroban". The original Abacus was consisted with ditch on plane and the ball moving on it. And there are some scene needed to calculate speedy. So, this "One touch Soroban" have the device for that.
Starting with -
This is the signal when you should start new calculation. Fingers slide on the reckoning bar, and set each balls to the starting position. The all thing you have to do is only one - push the button. That's all. Oh, the speed that you push the button become faster gradually. It's also practice. Oh...Practice ? Effort is the most steady road for making progress !
Spec : birch balls / 13×0.62×2.75 (inch) / 6.5 (oz)
One Touch Soroban (Abacus) [ON100]