Slit Lamp Illuminator Slit image width Slit image length Illumination field diameter 8, 5, 3, 2, 1, 0.2 mm Test mark with fixation star Slit image radial range Radial movement of the slit light illumination relative to the microscope axis Blue, red-free (green), grey (10 %) The UV filter and the heat absorption filter are permanently mounted Light source Operating temperature Stereo-Microscope Stereo angle Magnification changer Ocular magnification Range of adjusting eye-pieces Inter pupillary distance Instrument base Operation Adjustment of the instrument base Electric supply Single handed 3-dimensional operation of the guide lever 100 mm (length), 100 mm (side), 30 mm (height) class II, type B 230 V~, 0.13 - 0.21 A or 115 V~, 0.25 - 0.42 A 50 - 60 Hz Net weight 12.7kg (without power supply, headrest and options)