Square Gauge Block, Long Form Calibration Certificate No, Material Steel, Application Grade Inspection, Dimension Type Inch, Grade ASME 0, Nominal Size 8 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 Certificate of Inspection, Standards ASME