MACHINIST TOOLS LATHE MILL Machinist Starrett 440 Z 3RL Depth Gage OkCb

I think it is a tapping head.
I think it is a tapping head.
I don’t see a makers mark on it. Appears to be USA made, I believe, and think it’s CXA. It’s also missing the knob on the handle. See all pictures for the best description. Check out my other listings as well. Thank you for looking.