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It is one of the optical measuring maginify devices which can be used for reading and measuring tiny objects.Its focusing system is made by the rotation of the lens tube in the lens frame.There is a scale ruler,a angle sign of 15°,30°,45°60°,75°,90°and six 1/4-circles whose radius is 1,2,3,4,5,6 mm on the division plate of microscope. |
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