Spirograph Geometric Creative Design Ruler.

Perfect Creative and Best Gift For Kids and best birthday return gift for kids. Can be used to make various patterns and designs. Spirograph Geometric Ruler and Drawing Toy Can be used to make various patterns and designs. . Usage: Place the ruler on a sheet of plain paper. Place the small circle provided inside the ring. The point of a pen is placed in one of the holes of the circle. As the circle is moved, the pen traces out a curve.