10"x12".Lens Power: 8 Diopters (2.5XX Plus).Sturdy Non-Tilt Base.Lens is adjustable horizontally
and vertically.The Clarity hands free full
page desk top magnifier with base is a first quality Fresnel lens magnifier. For Best Results Use With Adequate LightingDo not confuse the Clarity Full Page Magnifier 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 magnifier excellent for reading, hobbies and
crafts, assembly, inspection, and computer screen enlargement.