The scale of things means how one thing compares in size to another. This series helps give an understanding of scale by comparing objects that are teeny-tiny or truly gigantic to other objects that are more familiar. The Scale of Dinosaurs, If someone told you how long the dinosaur Diplodocus was, could you picture it? Would it help if it was described as being as long as two double-decker buses? This book explains scale in an easy way by comparing many different kinds of dinosaurs by their weight and length. Book jacket.