* Distance(mm) Rockwell Scale: C 0.00 49.30 1.59 42.90 3.17 58.10 4.76 56.10 6.35 56.40 7.94 54.40 9.52 52.30 11.11 52.20 12.70 52.10 14.29 50.60 15.87 49.40 17.46 51.60 19.05 51.60 20.64 49.50 22.22 47.00 23.81 45.90 25.40 44.10 31.75 37.30 38.10 34.00 44.45 32.10 50.80 31.70 63.50 30.70 73.02 22.20