-Optimal illumination of the reading material is ensured by the bright light source and enclosed magnifier heads.
-Large, easy-to-use on/off switch makes System Vario easy to handle
-Round lens heads with a diameter greater then 58 mm are fitted with a retractable, red reaqding line for improved line-by-line reading orientation.
All rectangular magnifier lens heads are fitted with a retractable, segment-shaped additional lens of 4dpt.
-All magnifiers are calculated for a uniform eye-to-image distance (aE) of 400 mm (approx. 2.5 dpt. addition).
-Magnification/dioptric value/ideal eye-lens distance printed on all lens heads.