A scale drawing is a representation of an object or space that is proportional to its actual size. There are a variety of synonyms that can be used to describe this type of representation. These include proportional drawing, to-scale illustration, dimensioned diagram, and accurate rendering. Other terms that can be used to describe a scale drawing include blueprint, architectural plan, technical drawing, and engineering diagram. Regardless of the terminology used, scale drawings are typically used to accurately visualize and plan the layout of a space or object, whether it is a building, a machine, or a piece of artwork.