SPECIFICATION
| Material | Flexible, waterproof plastic card |
| Dimension | 5“ x 7” |
| Features | - Unified Soil Classification System (USCS) - 6 common soil color - Includes centimeters and inches scale |
| Material | Flexible, waterproof plastic card |
| Dimension | 5“ x 7” |
| Features | - Unified Soil Classification System (USCS) - 6 common soil color - Includes centimeters and inches scale |