Here’s another item from a recent tool lot purchase. I know it’s a grinding jig, but would like to know who made it or what machine it might have come with. It’s small at 2x2-1/4” footprint and about 2” high. The table tilts -20 to +15 degrees and the top rotates from 0 to 50 degrees. There is a marking 100 on it but nothing else. Any leads appreciated.