Has anyone seen or used this plate yet. It seems it's sole purpose in life if to lapp stones. They don't give a grit rating, at least not that I've seen. They do say it will lapp stones to. +/- 0.0005 flat. and it's a monster at 11x4.5, Less than the famous DGLP. The DMT costs around 199.00

Amazon.com: DMT DIA-FLAT Lapping Plate: Home Improvement