I've just updated after putting it off for a long while. I used to use version 0.9, but since updating I can't scale the point cloud between two markers.
I used to just create two markers, and use the "set reference distance" button (it looked like a measurement square with cursor in a box).
Now I've been reading about using a scale bar and such. I've managed to create the scale bar, but I can't specify it's length. I've read other posts that say I have to do this from the ground control pane (in the view menu), but the ground control pane doesn't seem to exist anywhere. (see screen shot).
What am I missing?