These stereo microscopes combine simplicity and optical quality. Solid build-quality and student proof features make these an ideal range for educational environments. The interchangeable objectives and eyepieces allow you to vary the magnification from 10X to 120X. Main features Vertical binocular head of the S-10 models Binocular 45° inclined head of the S-20 models Standard 2X objective (removable) Choice of a plain stand, incident illumination or incident and transmitted illumination