- An Instrument For Performing Calculations.
- Calculations Performed By Sliding Counters Along Rods.
- Its Primary Purpose Is To Teach Arithmetic To Children.
- One Colour Unit.
- 100 Beads.
$ 54.00
$ 0.00
$ 54.00
$ 0.00
$ 80.55
$ 61.96
$ 23.99
$ 36.00
$ 44.00
$ 37.40
$ 69.99
$ 46.99
$ 95.00
$ 64.96
$ 49.97
$ 54.99
$ 70.71
$ 54.39
$ 53.70
$ 41.31