- 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
$ 70.68
$ 54.37
$ 89.56
$ 68.89
$ 16.99
$ 67.68
$ 52.06
$ 62.00
$ 40.00
$ 88.21
$ 67.85
$ 44.95
$ 83.30
$ 64.08
$ 64.60
$ 49.69
$ 59.00
$ 35.00
