Solids of constant width

These machined solid aluminium shapes have the unusual property that, since their width is always 35mm no matter where you measure them, you can roll a flat object on top of three of the shapes and it rolls smoothly without wobbling up and down. One of the photographs shows a sheet of perspex sitting horizontally on top of the three shapes. Shapes of constant width are called Meissner’s bodies. Purchased in 2011 from


Size Width is 35mm in any direction.
Date Circa 2011
Key Phrases
Ref no N1579