This 20cm Maped Kidy Learn Concentration ruler features an ergonomic design and sensory elements that make it easy to use for children with concentration difficulties, hyperactivity, or autism spectrum disorders. Clear markings ensure accurate measurements for schoolwork, while the specific textures of this line make it more engaging and comfortable to use. A functional ruler from Maped that integrates the Kidy Learn Concentration line of sensory support tools for everyday school supplies.