Steel Rule Graduation Marks 1/64 in Coating Chrome Graduation Color Black Flexibility Rigid Graduation Mark Style Etched Finish Satin System of Measurement SAE Includes Case Rule Type Rule Numeric Marks Inches Numeric Format Decimal Length - SAE 12 in Length - Metric Not Applicable Width - SAE 1 in Width - Metric Not Applicable Graduation Units Inches Graduation Scale 4R Material Steel