... indentation and hence a more precise measurement. By means of 10x lens, 20x lens or 20x lens and 40x lens, the ... , 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, 3, 5, 10 ... specimen 130mmLight sourceCold light sourcePower 110V/220V, 60/50HZObjectiveThe objective 10x, 20x, 40x can be selected according to user’s requirementStandard ...