This is a vintage/antique grinding wheel.
I found it in my parent's house after they passed. I believe it was probably my grandfather's. I am 63.
I don't know much about it, but it looks like it would screw onto a workbench.
It turns freely.
It says Luter, but from looking at other ones, I believe it was made by Luther.
Please check the photos carefully, sold as is. Any questions please ask.
Thank you for looking. 😁