Long Working Distance Stereo Microscope NTX-L Specifications： Long Arm for Microscope Boby Inclined Binocular Head Interpupillary Distance 55-75mm Eyepiece WF10X/20 Inserted Objective 1X Working Distance of Objective 230mm Illumination 110V or 220V/12V10W Incandescent Lamp Options： Objective0.5X，Working Distance 250mm Eyepiece  WF5X/22，WF15X/15，WF20X/10