SZ3 Stereo Zoom Microscope features good performance and high quality. It is ideal for schools, scientific research institutes and industrial field. SZ3 can generate a high definition 3D images with large depth of field. Super long working distance gives more work space. The horizontal dual zoom knobs with detents are more flexible and comfortable. High-eyepoint and Wide Field 10X Eyepieces can be attached to SZ3 Stereo zoom microscope, and the continuous magnification is from 7X to 45X.Optical DatasheetAuxiliary LensWorking Distance (mm)Eyepieces10X(Φ20mm)15X(Φ16mm)20X(Φ12mm)25X(Φ11.5mm)30X(Φ9mm)Mag.FOV (mm)Mag.FOV (mm)Mag.FOV (mm)Mag.FOV (mm)Mag.FOV (mm)0.3X2872.1X-13.5X95.2-14.83.0X-20.3X79.6-11.94.0X-27.0X59.7-8.95.0X-33.8X57.2-8.56X-40.5X44.8-6.70.5X1773.5X-22.5X57.1-8.95.0X-33.8X47.8-7.16.7X-45.0X35.8-5.38.4X-56.3X34.3-5.110X-67.5X26.9-40.75X1175.25X-33.75X38.1-5.97.5X-50.6X31.8-4.710.1X-67.5X23.9-3.612.6X-84.4X22.9-3.415X-101X17.9-2.7Built-in(1X)1007X-45X28.6-4.410.1X-67.5X23.9-3.613.4X-90.0X17.9-2.716.8X-112.5X17.2-2.620X-135X13.4-21.5X4710.5X-67.5X19-315.1X-101.3X15.9-2.420.1X-135.0X11.9-1.825.1X-168.8X11.4-1.730X-202X9-1.32X2614X-90X14.3-2.220.1X-135X11.9-1.826.8X-180X9-1.333.5X-225X8.6-1.340X-270X6.7-1