In Origin, the Cursor tool is used to measure the X and Y distance between two points. You can place cursor objects on the same curve or on different curves, then use the Data Info window to display the relative positions of the cursor objects.
Minimum Origin Version Required: Origin 2019
There is also a Distance Annotation tool for adding and labeling a double-arrow between two points on the graph.
This tutorial will show you how to:
You can promote any worksheet row to the column label rows (header) area by right-clicking on the row and choosing one of the Set As... or Append To... options.