Binger 10x Compact Metal Folding Magnifier Optical Glass Linen Tester Promotion folding loup 10x magnification All metal material body, no plastic Inch and Metric Scales Small but powerful, High quality optical glass Compact and easy to use, the diameter of lens is only 0.5-inch lens because it has 10x magnification, this will lead to a narrow field of view, but it gives you more details, 0.5-inch lens is a good diameter for our 10x linen tester.