individual metallurgical optical module support more possibility of different industrial application microscope head of inverted or positive image can be optional upon customers needs. bright field dark field, polarizing, DIC fully integrated in this microscope maximum weight holding is 20.5kgs, with suitable fine focus Infinite chromatic aberration correction optical system long working distance infinite objective, including bright field dark field, polarizing, DIC observation, each observation method all offers the best image.aspherical Kohler illumination which makes brighter field of view UWF10×（Φ25）super wide eyepiece with multi-functional objectives with DIC slot which can be updated according to customers needs.