Rattleback: Difference between revisions

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==Other names==
A rattleback may also be known as a "anagyre", "(rebellious) [[celt (tool)|celt]]", "Celtic stone", "druid stone", "rebellious celtrattlerock", "rattlerockRobinson Reverser", "spin bar", "Robinson Reverser", "wobble stone" (or "wobblestone") and by the product names "ARK", "Bizzaro Swirl", "RATTLEBACK", "Space Pet" and "Space Toy".
 
==History==