Measures 23 cm diametre. Two-sided. A simple, visual aid for illustrating and teaching colour relationships. Easy to use and understand, this basic tool is used by teachers, students, artists, and anyone making colour selections. Each wheel includes grey scale, tints, tones, shades, results of mixing colours, and illustrations of colour harmonies (complementary, split complementary, triadic, and more). Defines primary colours, secondary colours, warm and cool colours, basic terms, and more.