The distinguishing feature of an inverted microscope is an optical arrangement where the observed specimen plane is directed downwards, and the turret with lenses is located under the object table. This ensures constant absolute perpendicularity of the specimen plane to the optical axis of the lens, which makes it possible to observe the entire surface in focus at high magnification. The best suited solution for researchers is the GX51 microscope which features all the contrast methods which metallographers need. At the same time, it can be used as an industrial microscope. A better microscope for routine research in plant laboratories is the GX41 model. This microscope for metallographic examination provides observation in a bright field and in polarized light.