A device for holding an independently introduced flashlight to the visor of a common baseball cap or its facsimile. Mechanical stress created by plain dielectric regions and its deleterious affect on performance, manufacturing yield and occupied area may be avoided by providing electrically isolated inclusions in the composite dielectric region of a material having a thermal expansion coefficient less than that of the dielectric material in the composite dielectric region. An image obtaining part detects the infrared light transmitted through the wafer disposed on the inspection stage to output an image signal. In certain exemplary embodiments, a first piece from the plurality of pieces can comprise a receiver adapted to slidably receive an inserter of a second piece from the plurality of pieces.