Support: I have two smooth objects. When I measure between their faces formZ tells me they are 1.9m apart. But in reality, those faces are 2m apart. I created two 2d rectangles over their faces, when I measure between those, the distance is correct at 2m.
I'm using the measure between tool found at the measure palette.
I'm sure this has something to do with the objects being smooth and complex. Still, this tool should work correctly.