The Clarity hands free full page sheet magnifying glass with stand is a first quality fresnel lens magnifier, that has crystal clear optics For Best Results Use With Adequate LightingDo not confuse the Clarity Hands Free Full Page Sheet Magnifying Glass with inexpensive magnifying sheets. The lens of the fresnel magnifier is first quality acrylic, that lets you view a bright clear and sharper image A crystal clear bright image makes this full page fresnel sheet magnifier excellent for reading, hobbies and crafts, assembly, inspection, and computer screen enlargement. Lens Size: 10"x12".Lens Power: 8 Diopters (2X Plus).Sturdy Non-Tilt Base.Lens is adjustable horizontally and vertically.