Dodecagonal World Time Clock

Here's a world clock from designer Charlotte Van Der Waals in the shape of a dodecagon.

Patented desk clocks with 12 slides, each with the name of two major cities; together, the 24 cities represent the 24 global time zones; to find the local hour in another time zone, simply roll the clock so that the city representing that time zone is on top.

Simple. Elegant. Functional.

Link (via BoingBoing)