As one of the best selling lines of magnifiers in the world, Dazor Circline magnifier lamps have been used by professional jewelers, artists, architects, and quality control personnel for decades. The circline fluorescent provides even, shadow-free light under the magnifying lens for hands-free, detailed work or the reading of fine print. The circular light source uniformly illuminates the viewing surface so that color contrasts are enhanced without competing shadows. The 5-inch diameter lens is precision ground, crown optical glass for near-zero light refraction and dispersion and is available with either a 3 or 5 diopter lens. This magnifiers is mounted on Dazor's contemporary "Floating-arm" that lets you position the light source and lens with the touch of a finger. The rugged steel construction is designed to provide years of service.