Solids Of Constant Width - Variety of 4 shapes Phone Stand NEW: We have added slots

NEW: We have added slots parallel to the length

3/8 - 16  Screw with Grease fitting (New protective style)

15 mm x 57

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

brand new aftermarket

Solids Of Constant Width - Variety of 4 shapes Phone Stand NEW: We have added slotsSet 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.