*
Distance(mm)	Rockwell Scale: C
    0.00	   42.40
    1.59	   48.20
    3.17	   51.40
    4.76	   51.20
    6.35	   51.80
    7.94	   52.40
    9.52	   53.30
   11.11	   53.20
   12.70	   52.80
   14.29	   52.90
   15.87	   53.10
   17.46	   53.30
   19.05	   52.40
   20.64	   52.60
   22.22	   53.40
   23.81	   53.20
   25.40	   53.70
   31.75	   52.20
   38.10	   53.90
   44.45	   52.20
   50.80	   52.50
   63.50	   50.60
   69.85	   50.10