![](/system/files/styles/large/private/art/59691/aff_farbvariator1.png?itok=IXSLiqvU)
Karl Marbe's color variator
15 x 50 x 15 cm (h x w x d)
Karl Marbe developed and built this color variator around 1893/94 during a research stay with Wilhelm Wundt in Leipzig.
It was the first apparatus of its kind that made it possible to change the proportions of the colors during rotation.