StereoBlue microscopes are designed for professional use.Available with ergonomic rack & pinion, or pillar stands, zoommagnification from 7x to 45x and incident and transmitted LEDilluminations, the StereoBlue series exceeds the demands oflaboratory and higher education. Recognized by biologists, entomologists, geologists, mechanical and electronic engineers and other professionals like jewelers and dental technicians, these microscopes are ergonomic for minimized fatigue and deliver crisp, high-resolution images.FEATURES• WF10x/21mm wide field eyepieces with eyecups• Trinocular head with 45° inclined tubes• 0.7x to 4.5x zoom objective, magnification from 7x to 45x. Fieldof view from 28.5mm to 4.4mm. Working distance 100mm• Incident and transmitted 3W LED illumination with internalpower supply. Both illumination intensities can be adjustedseparately• Available with ergonomic rack & pinion and pillar stands that areequipped with ergonomically designed flat bases• Zoom models• Ergonomic carrying grip• CE certified• 10-year **- Model ESB-1903