M-6745 Series Stereo Zoom Microscope is fully coated optical system with super high resolution. It is characterized by brand- new optical design, the best reproduction and true color image. Once brought in focus, image remains clear and sharp throughout the whole zoom range. It is ideally suited for industrial as well as for biological research where high precision, maximum working distance and large field coverage is required. The flat field par-focal zoom objectives provide continuously variable magnification from 3.35x to 270x depending upon the eyepiece and auxiliary lenses used.