Overview: Characteristics: It's focusable with own light source illuminating site so as to unrestricted by environment light when use. With readings, it can precisely read the actual size of a small article. When this microscope aims at an observed object in a clear focusing, 1 attic on the dividing ruler of this microscope is equal to the actual size of 0.05mm; 0~0.1 means the actual size of 1.0 mm. The minimum lattice is equal to 0.05 mm & the maximum range is 4.0 mm. With the magnification of 40X, it is clear & precise when observing. Applicable to: Industry, Electric circuit board & printing, Medicine, Gardening, Coin & Stamp, Education, Geography, Family & office Specification: Weight Approx:60.1g Size Approx:14 x 4.5 x 2.3