The instrument was intended as a more practical and less expensive alternative to the scanning electron microscope equipped with energy-dispersive X-ray spectroscopy. The new instrument couples a polarized light microscope (PLM) with an electron microprobe to allow the determination of elemental composition along with direct observation of the sample's optical properties and visible cathodoluminescence. The instrument uses a mechanical stage to reposition the sample for elemental analysis. The combination of analytical approaches means that the PLM microprobe can provide comprehensive, quick, micro-analytical capability for the analysis of trace-evidence materials. It is recommended that this instrument's commercial possibilities be assessed. Tables, figures, photographs, appended list of related publications, and 10 references