Straight Edge Flatness Tolerance Not Applicable Calibration Certificate Not Certified Straightness Tolerance 3.6 micron Parallelism Tolerance Not Applicable Thickness 0.39 in Coating Chrome Flexibility Rigid Edge Style Beveled Color Black Backing Material Not Applicable Finish Satin System of Measurement Metric/SAE Includes Case Length - SAE 15 11/16 in Length - Metric 400 mm Width - SAE 5/8 in Width - Metric 10 mm Magnetic Nonmagnetic Material Stainless Steel