5X 10X 20X Folding Loupe Jewelers Magnifier w/Case. 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 10X Double Lens Folding Magnifier. This is a new double lens folding magnifier. Both lenses are 5X and you can combine the two for a total of 10X power. The powerful magnification may help reduce eye strain. It is convenient for your home, office and travel. Enlarges fine print in books, maps, newspapers, directories, legal documents, etc. The 5X lens has a 2" (51 mm) focal distance and the 10X has a 1" (25 mm) focal distance. It measures approximately 2 5/8" x 1 1/4" (67 x 32 mm) open and about 1 5/8" x 1 1/4" (41 x 32 mm) closed. We work hard to update our descriptions and pictures of our merchandise.