Measure areaAA

Measures the area and perimeter of any outline, by its corners or by the lines around it. It writes nothing to the model, so it works in read-only models too.

How it works

1. Click the first corner, or type it as x,y. All snaps work, and with object snap on a corner clicked on a wall stays on it, even with ortho or grid snap on.
2. Click the next corners, or type one as @dx,dy from the last. From the second corner on, area and perimeter follow the pointer.
3. Press Enter, type C or click the first corner to close the outline. The area stays shown; the next click starts a new one.
4. Or set By to Lines and pick the lines around the area, such as the wall faces of a room, in any order. Each line is extended to meet its neighbours.