Trinocular stereo microscope for education work in university and High school, but also for documentation in a QC lab. The Greenough optical system delivers clear and distortion-free images in a zoom of 6:1, giving a magnification range of 7.5x-45x in the standard outfit. The implemented click-stops allow precise reproduction of magnification. The photo port allows an adaption of a digital camera for measurements through software. The instrument comes without illumination: Choose the best external illumination that meets the requirements of your samples.