The default unit of measure used is millimeter. However, you can
change this in the preferences. To specify the units, select
Me > Preferences
> Main
Preferences > Modeling > Units.
If, after a measurement operation but before saving the
product/review, you modify the geometry where you created a measure, the
measure will not be updated accordingly. The result of any such change to the
geometry will therefore be that the measure is no longer up-to-date. However,
automatic updating is possible.
For more information, see
Measure Tools.
If the measure is associative, this is indicated by the
appearance on the measure of the update symbol
(for instance for
Measure Item). In this particular case, you
can update the measure before saving the Review. To do this, right-click the
measure in the tree and select
[measure_name] object>Measure Update.