... HWF5x,HWF10x,HWF15x,HWF20x eyepiece, Ring light Information1.Sharp stereo erect image over a wide field of view2.45° ... interpupillary distance is between55mm-75mm,The left ocular-tube with diopter adjustment±5dp4.Inside incident light,brightness adjustable,various ... 7.9~Φ1.2 working distance113mm220mm50mm35mm LBXW-LED zoom stereo microscopy with built-in 30pcs LED Ring Light Verified Information This ...