- 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.
$ 50.06
$ 65.08
$ 50.06
$ 65.08
$ 29.99
$ 14.50
$ 34.64
$ 68.52
$ 52.71
$ 45.63
$ 56.62
$ 43.55
$ 10.97
$ 79.99
$ 58.50
$ 83.51
$ 64.24
$ 81.11
$ 62.39