Here are some qoutes
from various places about why use scale objects. if you have more information to add here please email them to me as this page is a work in process.My goal is to create a site that has all materials that photographers can use when taking pictures of objects that the viewer has no clue what size the object really is.
"Scale cubes are used for a variety of purposes, used in geologic pictures taken in a photo studio, and as a reference in photographs where the size of an object would not otherwise be known. (geologist often used shovels or rulers in the past but scale cubes are now being used often in taking pictures of small objects) "
"Adding an object of known size will help to show scale in the scene"