You can access the Measurement Tool by pressing down and dragging the Middle Mouse Button within a level viewport that has been set to an Orthographic View Mode.
https://dev.epicgames.com/community/learning/tutorials/70z/how-to-measure-distances-in-unreal-engine
Hi There,
There’s a new YouTube video on how to do it in game with UE5 blueprint.
&t=217s
Ta
J