This is the only air powered gyroscope we have ever seen. You blow into one of the side ports to get it going and you can even keep it going by blowing on it while it is still spinning. Its an ample 3 inches in diameter and comes with its own balancing pedestal. Since the gyro needs no external string or geared cord to start it going, it is pretty much self-contained. As an added selling feature, it is completely washable. Comes in assorted colors. |