* Distance(mm) Rockwell Scale: C 0.00 47.30 1.59 24.30 3.17 52.80 4.76 49.50 6.35 52.80 7.94 51.70 9.52 52.00 11.11 52.00 12.70 52.30 14.29 52.30 15.87 51.50 17.46 51.40 19.05 51.40 20.64 50.90 22.22 50.20 23.81 49.70 25.40 50.40 31.75 48.80 38.10 44.70 44.45 41.90 50.80 39.80 63.50 34.30 73.02 35.50