I am very new to blender and I took a 2d floorpan and converted it to a 3d model using archimesh.
I have now completed it (amazing, in itself!) but realised my measures are wrong (ie. if a room is 3.69m long in reality, when I measure it with the measure tool, it measures 2.85m in my 3d).
I guess I should have 'stretched' the floorpan at the beginning to make it match the blender units.
Is there a way to 'reset' the units, for example by telling blender that that wall is 3.69m and therefore all the other measure have to be proportionally adjusted?