G45 ASTM Grain Sizing E19-46

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Pattern G45 Description ASTM E19-46 Grain Sizing Disc Key features Eyepiece Reticle to ASTM E19-46 Circular pattern with 10 different segments each with a progressively smaller pat tern for grain size analysis. Image Diameter 15mm Glass Type and Thickness Soda Lime 1.5mm thick Diameter Tolerance +0/-0.1mm Orientation Correct reading through glass Show more