1Safe Material: The wooden ruler growth chart is crafted from walnut wood, ensuring safety and durability while being harmless to children's health. 2Accurate Measurements: The ruler includes precise markings, enabling you to accurately record your child's height as they grow, creating a cherished keepsake throughout their childhood. 3Unique Decoration: The growth chart acts both as a practical tool and a stylish decoration, adding a fun and whimsical touch to your child's room. 4Easy Installation: Simply align the measurement board against the wall, marking the bottom at a distance of 70cm / 27.6in from the ground, and attach the four wooden boards to the wall according to the markings on the ruler. 5Versatile Application: The growth chart can be utilized in children's bedrooms, living rooms, nurseries, daycare centers, and more, making it a versatile and meaningful addition to any space.