5 Jewelers 5X 10X 15X Pocket Loupes Folding Magnifiers. Double Lens Folding Magnifier. This is a new double lens folding pocket magnifier. Both lenses are 10X and you can combine the two for a total of 20X power. The glass lenses used in these folding pocket magnifiers provide durability for a long life. The durable plastic swing-away cases not only provide a protective cover for the lenses, but serve as handles as well. Each 10X lens has a 1" (25 mm) focal distance. When combined for a total of 20X, it has a 1/2" (13 mm) focal distance. It measures approximately 2 3/16" x 1 1/2" x 1" (56 x 38 x 25 mm) closed and 3 15/16" x 1 1/2" x 1" (100 x 38 x 25 mm) open. Triple Lens Folding Loupe. This is a new triple lens folding loupe. This has become the standard style of loupe used in the watch making industry and is excellent for any application where magnification is needed. In terms of performance, it is second to none. Each lens is 5X, you can combine two lens for 10X or all three for a total of 15X magnification. The 5X lens has a 2" (51 mm) focal distance. The 10X lens has a 1" (25 mm) focal distance. The 15X lens has a 3/4" (19 mm) focal distance. It measures approximately 2 1/4" x 1 1/2" x 1" (57 x 38 x 25 mm) closed and 4" x 1 1/2" x 1" (102 x 38 x 25 mm) open 3 Eye Loupes. This is a new set of 3 eye loupes. These have quality lenses for extra sharpness and clarity. They are perfect for examining stamps, coins, circuit boards, etc. You receive: One 10X eye loupe with a focal distance of 1" (25 mm). One 5X eye loupe with a focal distance of 2" (51 mm). One 2.5X eye loupe with a focal distance of 3" (76 mm). We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.