* Distance(mm) Rockwell Scale: C 0.00 60.50 1.59 60.80 3.17 54.10 4.76 58.10 6.35 57.30 7.94 56.90 9.52 56.50 11.11 53.40 12.70 51.30 14.29 50.20 15.87 48.60 17.46 46.80 19.05 47.00 20.64 43.70 22.22 43.80 23.81 45.10 25.40 44.70 31.75 39.00 38.10 33.40 44.45 23.90 50.80 32.20 63.50 33.30 74.61 30.30