*
Distance(mm)	Rockwell Scale: C
    0.00	   34.10
    1.59	   51.80
    3.17	   57.40
    4.76	   48.20
    6.35	   55.40
    7.94	   57.40
    9.52	   57.50
   11.11	   57.40
   12.70	   56.70
   14.29	   56.70
   15.87	   56.80
   17.46	   56.10
   19.05	   53.90
   20.64	   51.50
   22.22	   49.60
   23.81	   49.20
   25.40	   47.50
   31.75	   39.40
   38.10	   37.30
   44.45	   36.10
   50.80	   33.30
   63.50	   29.20
   74.61	   30.00