@mano-wii
another thing that should be corrected is to allow snapping on the intersection points of the measurement tools, and obviously, the measurement objects should not disappear while we move the vertices …
edit:
speaking of measuring instruments , here are some suggestions that emerge at the moment:
I have already read some of your interesting suggestions, such as transforming rulers into a new type of object called “measurement objects”
For this purpose it is necessary that the measuring tool is improved, the current defects must be removed, such as the appearance and disappearance of them if you enter object mode or mesh mode, or select another object … for this reason we need that the measurement outputs are objects that can be viewed in the outliner and that can then be hidden, freezed, rendered … like all other outiliner objects …
I would like the snapping points to work also on the measuring instruments … for convenience …
Another thing I’d like to suggest is that blender can create measurement objects automatically measuring by selecting entire segments (even curved) corners etc …
Then I would suggest the creation of APIs for devs that will want to add custom symbols for the various project categories, where addon developers can create their set of visual objects, for example the electronics has its own set of symbols, archviz have their symbols etc …