Straight Edge Flatness Tolerance +/- 0.0006 in Calibration Certificate Not Certified Parallelism Tolerance +/- 0.0002 in/ft Thickness 0.22 in Edge Style Square Finish Brushed System of Measurement Metric/SAE Features Quick Reading Includes - Length - SAE 36 in Length - Metric 900 mm Width - SAE 2 7/16 in Width - Metric 60 mm Material Steel