distance (aE)400 mmObject cutting width (s)36 mmDistance Eye - Lens (e)140 mm Lens properties magnifiying glasses Lens SizeØ 58 mm Operating unit (magnifying glasses) Magnification5,0 xDioptre20 dptMaterial [...] Hand-held and reading magnifiers mobilux® LED, Ø58mm/ 5x Art. Nr. 15115 Your browser does not support the video tag.Product BenefitsSuitable for reading small print, e.g. in a telephone directory or [...] Eschenbach Optik the focusing distance (aE: distance from the eye to the virtual image) is precisely 400 mm. The image can therefore be seen clearly with readers which have an addition of +2.5 dpt.Display and