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The Private Eye loupe - Our 5X magnification jeweler's loupe that is superior to a hand lens or magnifying glass.

Loupe - Wikipedia

4 MAGNIFICATIONS: You will get 4 magnifying glasses that offer varying magnifications - 5x, 10x, 15x, and 20x. You can use them in two different ways

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When I use a simple magnifying glass, does it matter whether I hold the object to the examined closer to the lense than its focal length farther away? Explain - Quora