As it turns out, wheels are nice iron. This plate is a donut that slips over my chuck on the rotary table, allowing for future division of 120, and127. My badass 4axis magnetic scale dro would not figure divisions that large for me. For every set of coordinates I had to go to my $260 Chinese dro on the lathe. When I asked it for 127 bolt holes it didn't bat an eye. Funny how life works, never quite how you think it will