Magnifier Desk Lamp - 5 Diopter - 2 in 1 - Spring-Arm Sits unobtrusively on desk providing efficient, cool fluorescent light for generals tasks Examine documents, coins, stamps & collectibles or photographs with 5-diopter magnification Optical-quality 5"-diameter precision-ground lens brings out fine details with excellent clarity Long, 24" reach with feather-adjust spring-assisted arm; fully-articulating lamp head, dust cover Anti-tip base, no clamps or attachment; UL-listed lamp with easy-reach lamp-head power switch