Jack Richeson Quiller Color Wheel for All Media by Stephen Quiller, 8.5 by 8.5-Inch
The Quiller Wheel - This simple color wheel can be used as an aid in mixing oil watercolor and acrylic. Developed by artist Stephen Quiller. Has a glossary of color mixing terms on the back. Laminated in sturdy plastic so that it will hold up to the toughest studio conditions!.