MBU was a german manufacturer from graders, they built most small graders. Here two links to pictures from them: http://www.bouwmachinesvantoen.nl/evenementen/2010 schaijk/0038-AAC_6612.jpg http://www1.picturepush.com/photo/a/5774309/1024/Higro-2011/DSC-8471-border.jpg
Here a video from a MBU Grader with laser: https://youtu.be/dMXmmpmg7gc