Clever “no hands” watch. Nice history by WristFashion.
A decade before Issey Miyake came out with the TO or years before Ron Arad did “Look Ma, No Hands” for Alessi, there was the Time Dimension. Designed by Hans Donner in collaboration with watchmaker, Bernhard Lederer, the watch took nine years to make and was probably the first watch to contain three discs instead of hands to tell time.
No Hands [wristfashion.com]