Leica S4 E is a three-dimensional visualization microscope using Grino optical system, with a 4.8:1 zoom ratio and a field of view range of 36.5mm. It is an ideal inspection tool for PCB board inspection, assembly, and maintenance. Ergolenses with adjustable working distance can be selected to achieve accurate positioning for specific applications, improve efficiency, and reduce fatigue. Its stereoscopic microscope eyepiece has a 38 ° viewing angle, providing a more comfortable viewing angle. The structural design is compact and compact, and an image rotator can be optional. 3D samples can be easily observed at a 45 ° angle, thereby improving sample processing efficiency and shortening inspection time.