Each rattleback has a mind of its own...
Some spin only clockwise, others only counter-clockwise. If you try to spin it the other way, it wobbles and starts spinning in the original direction!
Available wood: Sugar maple / Yellow birch
Dimensions: About 20 cm (8 in)
Spinning direction: Counter-clockwise
These two intertwined dragons on the rattleback are a reproduction of the Book of Kells (9th century). They are each looking in different directions. Which way should they turn?