* Distance(mm) Rockwell Scale: C 0.00 83.70 1.59 47.80 3.17 0.00 4.76 54.60 6.35 49.20 7.94 38.80 9.52 43.60 11.11 48.20 12.70 41.40 14.29 43.60 15.87 40.00 17.46 43.90 19.05 41.80 20.64 39.30 22.22 35.00 23.81 30.40 25.40 28.90 31.75 24.70 38.10 25.50 44.45 23.60 50.80 20.60 63.50 12.60 73.02 7.00