The Measurement tool enables calculating the straight line distance between two items in the 3D scene. Currently, the following items are compatible with the measurements tool:
Cameras
Markers
When measuring between two items, a dotted line is drawn that depicts the straight line distance to be calculated. The measured distance is displayed in the 3D viewport as an overlay on top of the straight line, as well as in the selection inspector window.
You can measure the distances between markers and/or cameras by using the Measure Tool.
Select the item you want to measure from
Press the Measure Tool button in the selected item inspector.
Hover a camera or marker to measure the distance to that item.
Select the marker if you want to persist the measurement tool while the marker is selected.
Select Cancel or another object to cancel the measurement tool.