Fluorescent Magnifier Desk Lamp - Large 7" Lens 3 Diopter Clamps securely to desk or table providing efficient, cool fluorescent light for generals tasks Examine documents, coins, stamps & collectibles or photographs with 3-diopter magnification Large 7" x 5.2" optical-quality precision-ground lens brings out fine details with excellent clarity Long, 34" reach with feather-adjust spring-assisted arm; fully-articulating lamp head