Well, that's what I seriously am thinking because there's one maths exercise in the text book using visuals of this type of abacus.
And wow, this one is really hard to find!
I mean hard to find in excellent condition as most of them are already broken!
This abacus was about hmm..I forgot the exact price, but around RM15 at MPH and made of such cheap lousy wood!
Please let me know if any of you managed to find one with good quality.
For now, we'll just have to settle with this.