This is a magnifying glass like to other.  Place any small object in the plexiglass dome.  Look down from the top for a 6X viewing experience.  Then look in through the side and the system of mirrors has you examining the underside of your object at 4X magnification.  Sturdy handles make it easy for small hands while the nylon strap and caribeaner keep it near at hand during all your outdoor- and indoor- adventures.