Solids Of Constant Width - Variety of 4 shapes Phone Stand All kits now ship with

All kits now ship with universal cross pins that fit both 6

NEW: We have added slots parallel to the length

brand new aftermarket

15 mm x 57

Solids Of Constant Width - Variety of 4 shapes Phone Stand All kits now ship withSet of four Cones of constant width with one of each Triangle, Hexagon and a Heptagon and Sphere. CNC machined in Canada out of brass or aluminum bar stock. Approximately 1" in diameter. These non spherical solids amazingly have constant width in every directionallowing them to roll smoothly. They are derived from two dimensional curves that were put into use by the 19th century German engineer Franz Reuleaux.