The Height Measure Tool can output the following results.
Status: True/False status of the tool.
Measurement: Width or height measurement, normally in pixels. In world-space when calibrated.
Edge Point 1/2: Location point (x, y) and slope of approximation line (Angle), normally in pixels. In world-space when calibrated.
Edge Line 1/2: Coefficients of the equation of the measured approximated straight line (A, B, C)
In Edit mode, the tool will display the status and distance and it allows you to link outputs to tags within the software's Global Data Service (GDS). Refer to Link Menus for details.
In the image, an ‘X’ will be drawn everywhere an edge point is found, and the edge line will also be drawn: