This water-resistant soil chart uses the Munsell System of Color Notation. 
The chart has 208 extra-large color chips to be mounted on the edge of the page for easy comparison to soil samples.
Chart features soil structure diagrams and a soil structure ruler. 
The water-resistant pages may be cleaned after each use without damage. Chip size, 11/16 × 1-1/2". 
Meets The GLOBE® Program specifications.