Big Stage with Extra Large Moving Range 250×250mm. This Microscope is used in IT Industry for Large Area Integrate Circuit, Wafer Observation and Inspection. Excellent Optical Quality with Infinite Optical System and LWD High Magnification Objective (40X/ WD3.7mm). Stage Speedy Movement by Hand to Get Observation Point Immediately. Comfortable and Enjoyable Operation with Low and Pre Position Control Knob.