#3 Eye Loupe Plastic 10X Magnifier Tool Spectacles. Clip On Eye Loupe 3X. This is a new 3X plastic clip on eye loupe. This loupe easily attaches to the frame of any pair of regular eyeglasses. It has a 3" (76 mm) focal distance. Clip On Eye Glass Loupe. This is a new plastic clip on eye loupe. This loupe easily attaches to the frame of any regular eyeglasses. Has a viewable lens that measures approximately 1" (25 mm). It is 10X power 10X Round Loupe. This is a new 10X round loupe. Great for viewing stamps, coins, beads and gems. May help reduce eye strain. The swing away case protects the lens. The viewing lens measures approximately 16 mm (5/8") in diameter. It has a 1" (25.5 mm) focal distance. 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.