Description Some refer to this challenging puzzle as the world's first analog computer! Used by ancient Grecian astronomers, it was reportedly used to predict astronomical positions and eclipses. Now, this fascinating brain teaser challenges you to align the dials until all 12 columns coming out from the center add up to 42. It's tougher than it looks! Wood. 6"dia. Ages 8 years and up.
Material TypeWood
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