40 Chapter 3
To enter the second reference point, follow the same procedure that
you used to enter the first one.
User units are called HU1 and HU2. In the hardness unit selection
menu, newly created user units will be followed by the hardness unit
that they where based on. So if for example HU1 was created using the
Rockwell C (HRC) hardness unit, HU1 will be displayed as HU1 (HRC).
Available user units are followed by (Empty).
Notes
When a user unit is created using two reference points
the first point must be of a lower hardness value than
the second point or the operation will be automatically
cancelled.
Even though a user unit has a different name (for
example a user unit created using the Brinell (HB)
hardness unit would be HU1 (HB), measurements done
with this user unit will display hardness values in (HB)
only.
User units are only available for the material in which
they where created. So for example if a user unit was
created using steel, and you change to stainless steel,
the user unit will be displayed as (Empty).
The (N) number of values used to generate reference
points is set in Group (N)
(Page 36)
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