PM-1/PM-2 series polarizing microscope are appled to differentiate componen of matters that have birefraction characterist,as a sort of import tool in pharmacology, geognosy, mechanism, metallurgy to research crystal, mineral, rock and metallurgical form. The instrument, are equipped with strain-free plan achromatic objectives and wide field eyepieces, high precision rotatable polarizing stage and excellent accessories. They can be applied in single polarizing, orthogonal, conoscope. These productes have good sculpt and ateady mechanical structure, so that operate comfortably and expediently. They are the ideal instruments for factory,mine, scientific research and university to check, research and teaching ect.