GN536 Features: -Magnifier.-Plastic case.-Two powerful lenses which can be used independently.-Use for standard applications, or collectively for superior magnification power.-Pivot point on its base and can be turned into the protective case for storage when not in use.-Ground and polished optical glass lenses, have a power rating of 4x for a combined magnifying power of 8x.-Individual power of 4.0 each and total power 8.0. Dimensions: -1" Diameter and 1.25" focal length.