G48 Kotter

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Pattern G48 Description Kotter Pattern Key features Eyepiece Reticle with Kotter pattern for analysis of bitumous coal and anthracite. This reticle is normally used with a 20x obje ctive and is sized accordingly. If other objective magnifications are used then we have to apply a calibration factor to ensure the pattern is the correct size. Please ask for a quotation for a custom made reticle. Reference: I.S.O. 7404-4: 1988 (E). Methods for Analysis of Bitumous Coal and Anthracite. Part 4 and Methods of Determining Microlithotype Composition. Line Thickness 0.010mm +/-0.002 Glass Type and Thickness Soda Lime 1.5mm thick Overall Tolerance +/-0.0025mm Diameter Tolerance +0/-0.1mm Square Sizes 0.25mm Orientation Correct reading through glass Show more