Request InfoCarl Zeiss Microscopy LLCCarl Zeiss MicroImaging GmbH has unveiled Definite Focus, a system for its Axio Observer.Z1 inverted research microscope that counteracts drifting in the Z-direction. Coupled directly to the nosepiece carrier, the instrument measures the distance between the specimen and the objective, then calculates and corrects for possible deviations from the nominal value. 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