The Coil 11 Diopter Stand Magnifier is simple, stylish and uncomplicated.Coil stand magnifiers incorporate aspheric lenses for a sharp, distortion-free image. The light-weight frames are made from tough Polystyrene and fit comfortably into the hand. There are six hand magnifiers; four are rectangular for paragraph reading and two are circular for detail recognition. For those with poor manual dexterity there are four stand magnifiers where the viewing distance is pre-set for the optimum image quality. All magnifiers fully conform to BS EN ISO 15253: 2000*.