Children can learn to count with this beautifully made Outdoor Abacus. The Abacus has 4 rows of 10 wooden slices and is ideal for introducing addition and subtraction to young children. Dimensions: H – 1100mm x W – 750mm x D – 500mm. Materials – Scandinavian Redwood Timber. Hand made in the UK using pre-treated high-quality and low -maintenance play grade timber from sustainable sources backed with a 10-year supplier guarantee. Direct Delivery.