Thanks for your reply re the camera settings. Your settings and proceudure are basically what I use and do.
I think I still have to fiddle a bit with the relative heights of the Object , Camera, and Laser above the ground plane as some of my values show as yellow during the scan. I also notice that the 'a' (angle) readout goes red towards the end of the scan once it drops under about 23 degrees or so. Now that I think of it, that's where the deepest corrugations seem to occur in the mesh.
I'm still thinking that my Laser line is way too thick and that's whats causing the heavy corrugations in my scans, particularly when the Laser angle starts going out of range. This has just given me an idea - I should probably increase my Calibration sheets from 60 to around 70-80 so that the angle values at the start and end of the scan stay within acceptable limits.
More experimentation required here me thinks
Just a thought - you should be able to get your scan to go the other way (from top to bottom) if you mount your egg-timer on the left-hand side of your pole as shown in your pic. That way, the Laser unit will go up when you start advancing the minutes dial
PS - I'm not sure what Mattia meant regarding uploading your images as attachments (?) - I can see them perfectly.