other size(s): 800

    The 9-foot tall prototype for "Clock of the Long Now" was designed to work flawlessly for 10,000 years. A a stack of mechanical binary computers is capable of singling out one moment in 3.65 million days. It can keep track of leap centuries, the orbits of the six innermost planets in our solar system and the wobbles of Earth's axis in addition to the hours, minutes and seconds. [Long Now]