Angle grinder follower tool

As promised: a few pictures of the follower that I made attached to my little angle grinder to follow the outer side of the wheel tubes whilst grinding.
I used the threaded holes on the side of the grinder to attach the follower. The long bolts I welded to the follower is to adjust the distance between the follower 'legs' and the center of the grinding disk. Since the bigwheel and smallwheel have different diameters (obviously), adjusting this distance is necessary.