Straight Edge Flatness Tolerance Not Applicable Calibration Certificate Not Certified Straightness Tolerance 3.2 micron Parallelism Tolerance Not Applicable Thickness 0.32 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 11 13/16 in Length - Metric 300 mm Width - SAE 5/16 in Width - Metric 8 mm Magnetic Nonmagnetic Material Stainless Steel