Hi Rudl,

> not on the tool, but on the already drawn polyline itself.

The length of the current segment being drawn is displayed already in the distance control in the bottom toolbar here:




> Arbitrary in space, but it has it´s width and hight on the 2D plane where it exists.

An abstract plane is defined by a point and a normal direction - meanwhile "width" and "height" only make sense when there are specific x and y axis directions set up, and there are infinitely many different x and y axis directions that live in any one single plane.


> I see , that it is difficult to define the x,y direction. Maybe coloured numbers correspondending
> with lines in the same colour in x and y direction of the bounding box.

The problem is more about what if the x and y axis directions that happen to be used are not in the right directions for the kind of measurement that you want.

- Michael