Reference/comparison
Here you have the option of clicking on the to select/call up a reference or comparison measurement. These are then available for selection in a preview window.
Select a data record and then confirm with OK.
By ticking the Reference or Comparison box, you determine whether the selected measurement is then displayed in the active window.
When selected, the reference appears as a blue line in the measurement. A comparison of different measurements can also be selected via a selection window with preview.