*
Distance(mm)	Rockwell Scale: C
    0.00	   56.70
    1.59	   53.00
    3.17	   55.10
    4.76	   55.90
    6.35	   57.40
    7.94	   56.30
    9.52	   58.40
   11.11	   59.70
   12.70	   59.90
   14.29	   58.90
   15.87	   59.00
   17.46	   52.40
   19.05	   50.50
   20.64	   51.70
   22.22	   52.10
   23.81	   52.00
   25.40	   51.60
   31.75	   45.90
   38.10	   45.80
   44.45	   40.20
   50.80	   36.80
   63.50	   38.70
   74.61	   18.70