Abstract: An optical lens selection apparatus by which an individual who engages in an activity such as welding, machining, wood working or the like, and who wishes to obtain enhanced viewing of a work piece may readily choose an appropriate lens for use with a protective eye mask. The apparatus of the present invention is comprised generally of: a box-like casing; a lens evaluation compartment fixed to the casing; a drum member situated within and movably attached to the lens evaluation compartment; a plurality of slide-like plates, each of the slide-like plates being provided with an optical lens, the plurality of slide-like plates being fixed to the drum member; and a viewing means releasably attachable to the lens evaluation compartment for use with the drum member and the plurality of optical lenses fixed thereto.