You can measure distance with the Measure Distance tool 
and areas and paths with the Measure Area and Path tool 
.
Measure distance
To measure distance, do one of the following:
- Click the Measure Distance tool .
- Press M+D.
- Click Analysis > Measure Distance in the main menu.
Click in the scene to place the starting point. Click again to place the end point.
Measure Distance Tool Options
The 
Measure Distance tool includes the following options:
| Measure Distance | |
| Diagonal distance | Diagonal distance between the points. |
| Horizontal distance | Horizontal distance between the points. |
| Vertical distance | Vertical distance between the points. |
| Show laserlines | Turn laser lines on and off. The laser lines project the current height of the mouse onto the surrounding geometry. |
Measure area and path
To measure area and path, do one of the following:
- Click the Measure Distance tool and then click the Measure Area and Path tool in the Tool Options window .
- Press M+A.
- Click Analysis > Measure Area and Path in the main menu.
To measure, click in the scene to place the starting point. Add additional points to calculate the length of the path or click the starting point or press Enter to close the path. Press Ctrl+Z to undo last measure point.
The measurement points are not required to be part of the same plane. If they are not in the same plane, the points are projected onto a horizontal or vertical plane at an average height or depth automatically.
Note:
- In this case, the displayed surface measure relates to the projected area, while the displayed distance always refers to the perimeter defined by the measurement points.
- The projected plane is positioned so that the distance to the measurement points is minimized. The measurement point with the largest distance to the plane is marked with a label displaying the distance.
Measure Area and Path Tool Options
The Measure Area and Path tool includes the following options:
| Measure Area and Path | |
| Perimeter | Perimeter length of the polygon. |
| Area (projected) | Area of polygon. |
| Show laserlines | Turn laser lines on and off. The laser lines project the current height of the mouse onto the surrounding geometry. |
Measure tool considerations
The following list describes measure tool functionality:
- When placing measurement points, the cursor snaps to vertices, edges, faces, and guides.
- The measurement tools allow for parallel and perpendicular snapping.
- Only one measurement can be displayed in a scene at a time. When starting a new measurement, the current one disappears.
- Measurements disappear after switching to a different tool. This also applies for the navigation tools in the toolbar. The navigation shortcuts can be used between placing measurement points and after finishing a measurement.
- To reset the tool, press Esc.
- To change the units, click in the Viewport and go to View Settings > View Coordinate System. The change takes effect with the next measurement you start.
- To adjust a completed measurement, hover over the measurement points. Use the arrows to move the measurement point along the axes, or use the orange ball to move freely and snap to vertices, edges, faces, or guides.
- You can copy values from any of the fields in the Tool Options window .