(With scale of the microscope / magnifying glass can accurately read the actual size of small items, 1mm scale value of 0.005mm accuracy) with LED lights. Can test the textile printing, porcelain internal bubbles and open films, jewelry internal structure , Calligraphy and paper fiber, the relationship between the old ink and paper, bronze true and false rust structure, silver castings authenticity, stamps, genuine and counterfeit trademark identification.