3.3X Double Loupe Glass Clip On Eyeglass Cheap Tools. Double Lens Clip On Magnifier. This is a new double lens clip on magnifier. These attach to your eye glasses. Each lens is 3.3X and when combined they are 6.6X. The 3.3X lens has a focal distance of 3 1/2" (89 mm). Combined the 6.6X lens has a focal distance of 1 1/2" (38 mm). 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. 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.