A 100mm (4"), 2X handheld magnifier glass has large field of view and sufficient magnification for comfortable reading of books and as a visual aid for art and antiques; only $4.50.
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"Ordered 100 magnifying glasses for a marketing project. First I started on Amazon, but they only allowed me to order 10 at a time. That was a waste of my time and a complete pain. Some of the orders were cancelled because they couldn't …" Read the full review
Although it only has 2 times magnification, this hand magnifier may be all you really need for reading if you have otherwise normal vision. You can also use it for burning paper or dried leaves since the diameter of the lens is proportional to the amount of sunlight it can focus.
Not sure what magnifier you need for reading? Our blog: What Magnifying Glass Do I Need for Reading? might interest you.