Choose any external gear, In the two inner circle You can draw different graphics.
Primary school students the best intelligence toys, can cultivate the habit of correctly.
Hands and brain, the development intelligence, the fun.
Can easy to quickly draw a complex pattern tens of thousands of fantasy.
Can free combination, more play to space.
Great gifts for your children
Scale: 0-20cm, 0-8inch
Colour: As the picture shows, Random delivery
Size: approx. 20*10cm
1 Pc Spirograph Geometric Ruler