Steel Rule Spring Tempered Thickness 0.05 in Graduation Marks 0.5 mm Coating Chrome Graduation Color Black Flexibility Rigid Graduation Mark Style Etched Folding Rule Type Not Applicable Backing Material Not Applicable Finish Satin System of Measurement Metric Includes - Rule Type Rule Numeric Marks Millimeters Numeric Format Decimal Length - SAE Not Applicable Length - Metric 150 mm Width - SAE Not Applicable Width - Metric 19 mm Graduation Units Millimeters