10X Folding Loupe Great For Jewelers, Viewing Gems, Beads, Coins & Stamps. This is a new 10X folding loupe. Great for jewelers, viewing gems, beads, coins and stamps. The viewing lens measures 18 mm (3/4") in diameter. Has a focal distance of 1" (25 mm). It measures approximately 1 1/4" x 13/16" x 5/8" (31 x 20 x 15 mm) closed and approximately 2 3/16" x 13/16" x 5/8" (55 x 20 x 15 mm) openWe 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.