Optical Mixer by Naef Toys

 

The Optical Mixer (Optischer Farbmischer) can demonstrate aspects of color theory when spinning the top with one of the seven interchangeable discs. So, you can buy it for color teaching purposes or buy it just for fun (which is what I’m tempted to do).

Seven interchangeable cardboard discs included with info describing the phenomenon.
Designed by Ludwig Hirschfeld-Mack.

 

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