... 10x lens, 20x lens or 20x lens and 40x lens, the tester has a wider measurement field and broader usage range. The set of lens (2 pieces lens ... video measuring devices and indentation automatically meausring device without switching optical path. Uniquely adopts cold light source, the usage life of ... , 1, 2, 2.5, 50.3, 0.5, 1, 2, 2.5, 3, 5, 100.5, 1, 2, 2.5, 3, 5, 10, 20, 301, 2, 2.5 ...