The Cronotime clock was designed by Pio Manzù as a promotional item for Fiat, later produced by Ritz-Italora in 1966. It was re-issued by Alessi from Italy. The shape of Cronotime is toric (part of a circular section ring) totalling a 1/6 of circumference. The shape in turn separated into two equal parts which swivel, allowing you to modulate the direction in which the dial is pointing with respect to the support surface. Part of the permanent collection of the Museum of Modern Art (MoMA) in New York.
Cronotime by Pio Manzù