Steel Rule Graduation Marks 1 mm 1/16 in Graduation Color Black Flexibility Flexible Graduation Mark Style Etched Finish Polished System of Measurement Metric/SAE Includes Case Rule Type Rule Numeric Marks Inches Millimeters Numeric Format Decimal Length - SAE 6 in Length - Metric 150 mm Width - SAE 1/2 in Width - Metric 23 mm Graduation Units Inches Millimeters Material Steel