... ,0.75x,1.5x,2x Ring fluorescent lighting 1.Sharp stereo erect image over a wide field of view. 2.45 ... adjustment ±5dp,The interpupillary distance is between 55-75mm 3.Zoom objective 1x-4x 4.ZTX-E series supplied with pillar ... with lock and key /Aluminium case ZTX-E-W binocular zoom stereo microscope