Specifications include, but are not limited to: Meyer Instruments is the only feasible source from which to acquire a Glissando POL Slide Scanner. The manufacturer, Objective Imaging has given Meyer Instruments the exclusive rights to sell the Glissando POL Slide Scanner in the Missouri region. The Glissando POL slide scanner best suits the needs of the Department of Natural Resources due to its capability to scan and image petrographic thin sections of rock and provide high resolution imagery. The Glissando POL Slide scanner is unique in its capability to do this in both brightfield and polarized light illumination. The Glissando POL slide scanner is also capable of producing extended Depth of Field (EDF) images, which will be required due to the variation of thickness on petrographic thin sections.