Solids Of Constant Width / Reuleaux Triangle - Set of 3
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Set of three Cones of constant width. Also known as "Reuleaux triangle" or Solids of constant width. This listing is for aluminum These are non-spherical solids that amazingly have constant width in every direction-allowing them to roll smoothly. They are derived from two-dimensional curves that were put into use by the 19th-century German engineer Franz Reuleaux.