The Vision-Luxo 17215LG Fluorescent Magnifier with 5-Diopter Lens, 30 in. Arm, Edge Clamp Mount, Aluminum Body, Light Grey offers a sturdy all-metal construction with a sleek design, flexible arm, and excellent light output suitable for a variety of industrial, laboratory, cosmetology, and low vision applications. This model includes a 22-watt fluorescent circline lamp which provides 360◦ shadow-free illumination. The inside is finished in white to optimize and evenly distribute light. The built-in starter means the switch does not have to be held down for several seconds to illuminate the tube.