* Distance(mm) Rockwell Scale: C 0.00 39.80 1.59 58.30 3.17 58.40 4.76 58.50 6.35 58.10 7.94 54.60 9.52 55.30 11.11 54.80 12.70 55.70 14.29 56.90 15.87 56.60 17.46 56.10 19.05 55.60 20.64 54.80 22.22 53.60 23.81 53.60 25.40 51.20 31.75 46.70 38.10 35.00 44.45 25.90 50.80 32.10 63.50 40.50 73.02 33.90