The Measure tool provides a quick way to measure and temporarily display the length (and angle from the horizontal, if applicable) of individual walls or lines that you select in plan views. In elevation views, you can use this tool to select only the ends of walls running perpendicular to the view direction (to display the height of the wall). In both plan and elevation views, however, you can draw a temporary line or a chain of lines connecting points that you specify. In either case, the dimensions generated by the tool remain on the screen until you start the next measurement or exit the tool. Length dimensions also display in the Total Length box on the Options Bar.
If you select Measure Between Two References, you can measure a certain length from a starting point. Click the starting point, move the cursor in the direction that you want the line to extend, and enter a value for the length of the line.
Measure line with length and angle measurements
Measure chain with the total length displaying on the Options Bar