Wooden Cross Scales are perfect for teaching children about volume, weight, and balance. These balance scales encourage curious minds to explore how they work using various materials such as water, stones, sand, or balls, both outdoors and indoors. They can be used in two ways: with the wooden trays, as shown in the pictures, or with the slotted arms at the top, which can accommodate buckets and hanging jars. Crafted from sustainably sourced Scandinavian Redwood, these scales are durable and long-lasting. For optimal use, we recommend placing them on a flat, even surface.