this was given to me today, thanks for your help.
this was given to me today, thanks for your help.
Has this been ground flat on the bottom? If so I'd say it's a holder for grinding lathe tools on a surface grinder. It looks like it will hold either 1/2 in. or 3/8 in high speed steel tooling blanks for lathe. Just a guess......
It almost looks like there are graduations on the ball.
looks like a tool holder form making half spheres on a lathe.