Square Gauge Block, Long Form Calibration Certificate No, Material Steel, Application Grade Inspection, Dimension Type Inch, Grade ASME 0, Nominal Size 0.5 in, Shape Square, Tolerance 0.10 microinch, With Hole Yes, Face Length 61/64 in, Face Width 61/64 in, Included Certification Certificate of Inspection, Includes Cert. of Inspection, Standards ASME