* Distance(mm) Rockwell Scale: C 0.00 42.10 1.59 0.00 3.17 50.80 4.76 55.00 6.35 55.50 7.94 56.20 9.52 57.30 11.11 56.90 12.70 56.40 14.29 55.00 15.87 54.40 17.46 53.90 19.05 50.80 20.64 52.70 22.22 50.60 23.81 48.70 25.40 45.70 31.75 41.00 38.10 37.50 44.45 36.60 50.80 34.40 63.50 36.20 76.20 0.00