Granite Parallel Long Form Calibration Certificate No Material Granite Application Grade Inspection Color Pink Flatness 0.000050 in per 6 in Grade A Height - Inch 2 in Height (mm) 50 Included Certification Short Form Certificate of Accuracy with NIST Traceability Length (In.) 12 in Length (mm) 300 Number of Finished Faces 4 Number of Pieces Matched Pair Parallelism 0.000050 in per 6 in Maximum of 0.0001 in Size (In.) 12 in x 2 in x 1 in Size (mm) 300 mm x 50 mm x 25 mm