The 90-Degree Angle drawing tool allows you to create lines that include a 90 degree angle. As with a Line tool, the thickness and consistency can be adjusted using the Takeoff Tools panel in Digital Takeoff.
If you have not specified a Drop Length on the toolbar, you will be prompted to enter the value.
You can use Drop & Continue from the right click menu to add the drop and two elbows and continue with your measured line.
Note: Deleting the Standard Takeoff item will also delete its corresponding Digital Takeoff annotation, provided that Digital Takeoff is connected.