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ISO 8578:1997 Optics and optical instruments -- Microscopes -- Marking of objectives and eyepieces
standard by International Organization for Standardization, 04/01/1997
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This International Standard specifies the format for the marking of data for optical characteristics on microscope objectives and eyepieces and the positioning of this data. It makes recommendations for the marking of additional information, particularly colour coding of rings designating the magnification of objectives and the immersion media with which they are used.