abstract:A [[petrographic microscope, which is an optical microscope fitted with cross-polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.]]
This is idealoptical instrumentformicroobservation in metallographicstructureandsurfacemorphology. It issuitable for research in metallography, mineralogy, precisionengineering, etc.