About this item: 
A compact multi-purpose microscope with dual illumination and simple polarization for observation of metals, plastics, and biological samples. 
A combination of six metallurgical and biological plan-achromatic objective lenses and two sets of eyepieces provide a range of magnifications from 40X to 800X 
Use a combination of brightfield and simple polarization to bring out complex details such as stress in metal and other materials. 
Includes a 18MP USB 3.0 camera and specialized microscopy software for PC, Mac, and Linux