Ruler Set Thickness 0.06 in Graduation Marks 1/64 in Coating Not Applicable Graduation Color Black Flexibility Rigid Graduation Mark Style Etched Folding Rule Type Not Applicable Backing Material Not Applicable Finish Polished System of Measurement SAE Includes Case Rule Type Rule Numeric Marks Inches Numeric Format Decimal Fractional Length - SAE 1/4 in 1 in Length - Metric Not Applicable Width - SAE 1/2 in Width - Metric Not Applicable Graduation Units Inches