Some parameters
have a small button with a lock on it
on the left of the parameter's name. These
Lock buttons allow to fix the parameter
value to avoid an accidental change or
a change due to interrelation between
parameters.
Example of using
Lock buttons (measuring parameters of
mounted diamonds).
The user measures diameter and total height
of the diamond and enters them in Diamond
Calculator, then fixes total depth with
Lock button. After that, measuring the
crown height and entering it into the
software will cause an automatic adjustment
of current pavilion depth and girdle thickness
in such a way that the total height will
not change.
Parameter fixing
is also very useful in diamond marking
for maximizing the diamond mass with respect
to restrictions imposed by a diamond with
old cut, a semi-cut diamond, or a rough
diamond.
Note. If
a proportion allows a choice of units
of millimeters or percents of diameter,
only the value in percents will be fixed
when Lock button is checked, even if a
value in millimeters is displayed currently.
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