What means in Scale image?
An in-scale image is one that shows a product next to an object that most people would recognize. With that visual information, customers can begin to visualize the relative size of the product they're thinking about buying.
What is product size?
Product dimensions are characteristics that serve to identify a product variant. You can use combinations of product dimensions to define product variants. You must define at least one product dimension for a product master in order to create a product variant.