dim's needed for rocker

[pjf134]

I need dim's for a rocker on a SB9 lantern tool post, since it did not come with lathe. I will be changing to a quick change soon, but for now I am getting tired looking for shims to raise tool. I guess it would help just to make one for now, instead of using anything I can find laying around to use. I just mainly need arc height.
Thanks,
Paul

 

[GK1918]

Im thinking it would be in the area of a 1/2" off the top of my head. I should think a moon
shaped woodrift key would work. I ground my own just matching the washer.