Designed by Nendo for Kartell, the dividers on Sundial bookshelf are set at various angles like the shadows cast by a sundial.

Information from Nendo:
Objects and their shadows look different as the sun moves across the sky, casting its light from different angles. The shelves of this bookshelf are arrayed at slightly different angles, like the shadows cast by a sundial, so that the books placed on them and the look of the bookshelf itself are also always changing.

Other works by Nendo:
24 ISSEY MIYAKE
Blown-color
Blown-fabric
Dancing Squares
Fadeout Chair