brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system

transmitted full multi-coatingExtra-Low-Dispersion GlassYes Optical properties Lens diameter42 mmNear point2 mApochromaticYesSuper wide-angle opticsYesFlat Field VisionYes Warranty Warranty PlusYesWarranty10

Switch between ring illumination and segment illumination for examining surfaces.Illumination near point for shadow-free illumination: 3.5 cm.Illumination level: approx. 6000 lx (at a working distance of

properties Magnification8 xLens diameter56 mmExit pupill7 mmGeometric luminosity49Twilight number21.2Near point1.8 mField of view/Visual field/Field of vision114 m/1.000 m Warranty Warranty5 yearsMaterialsmanu

Magnification10 xLens diameter32 mmExit pupill3.2 mmGeometric luminosity10.2Twilight number17.9Near point1 mField of view/Visual field/Field of vision98 m/1.000 m Warranty Warranty5 yearsMaterialsmanual_sektor_D

multi-coatingExtra-Low-Dispersion GlassYes Optical properties Magnification10 xLens diameter42 mmNear point2 mApochromaticYesSuper wide-angle opticsYesFlat Field VisionYesField of view/Visual field/Field of

multi-coatingExtra-Low-Dispersion GlassYes Optical properties Magnification8 xLens diameter42 mmNear point2 mApochromaticYesSuper wide-angle opticsYesFlat Field VisionYesField of view/Visual field/Field of

brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system

focus it in front of the retina (short-sightedness), or behind it (long-sightedness), or if one focus point on the retina is not attained (astigmatism). In addition, damage to the eye media, the retina or the

. What is long-sightedness? In the case of long-sightedness, the eyeball is too short. The focal point of the eye is behind the retina. Your near vision is then blurred, e.g. when reading. When the eye [...] What is short-sightedness? In the case of short-sightedness, the eyeball is too long. The focal point of the eye is in front of the retina and your distance vision will be blurred. The eye is not able [...] require a functioning retinal surface of around 2.5 degrees to the left and right of the fixation point, i.e. a visual angle of around 5 degrees in total. A reading angle is necessary as our eyes do not