coated for a distortion-free image with edge-to-edge sharpness.Details relating to magnification/ dioptre value/ recommended eye-lens distance are stated on all magnifier heads.Bright, even illumination [...] einschwenkbarer, roter Leseliniemagnifier headLupentopf, lose Optical Properties Magnification3 xDioptre12 dptMaterialsmanual_system varioPLUS_944579_05-212 MBmanual_scale system varioPLUS_11648_04-19461