Request InfoPrior Scientific Instruments Ltd.A motorized scanning stage for upright microscopes, the ES111 OptiScan from Prior Scientific Instruments Ltd., is designed as a low-cost alternative to the company's ProScan stages. It has an improved three-plate design and mounting system, making it compatible with all specimen holders from the ProScan system. Specimen holders include single and multiple glass slides (up to four 3 X 1-in. slides simultaneously), multiwell plates, petri dishes and holders for metallurgical samples. The stage's 125 X 75-mm travel range allows operators to view the specimen types in full. 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