* Distance(mm) Rockwell Scale: C 0.00 57.80 1.59 60.10 3.17 60.10 4.76 59.70 6.35 59.70 7.94 59.40 9.52 59.20 11.11 59.40 12.70 59.30 14.29 59.00 15.87 59.00 17.46 58.70 19.05 58.80 20.64 58.10 22.22 58.20 23.81 57.70 25.40 57.20 31.75 54.60 38.10 52.00 44.45 49.00 50.80 46.30 63.50 44.30 76.20 43.50