Tumbling Top - Spinning Top

This elegant metal top has two completely different shapes, each one with a different motion.

One shape behaves like a normal spinning top. But twist the two halves of the top by 90 degrees, and you now have an 'Oloid' shape. On a gentle slope, or if you give the Oloid a slight push, it will 'wobble'across the surface.

The top is made of aluminium, and is about 33 mm high. As in the picture, one half is silver coloured, and the other half is blue.