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Paint and Coatings Industry Standards
ISO 8503-3:2012 ISO 8503-3:2012 Preparation of steel substrates before application of paints and related products -- Surface roughness characteristics of blast-cleaned steel substrates -- Part 3: Method for the calibration of ISO surface profile comparators and for
Based on observation of the test surface over a specified field of view, focussing the highest peaks and lowest valleys by movement of the objective. Determination of the distance (peak-to-valley height) between the highest peak and lowest valley by movement of the objective in order to focus on the lowest valley within the same field of view.
