Looking for pic of fine feed wheel mounting (M Head)

[Timpmandan]

I'm working on an M Head restoration and want to put a 4" fine feed hand wheel on. I don't have any original mounting wheel to model the hub area after. Does anybody have a photo for reference? I could assume it's just a cross dowel-style thing, but I know I've seen something about adjustable positioning somewhere...

 

[Shiseiji]

Old thread but . . It's a cross dowel. I made a handle for mine from a ribbed sewing machine hand wheel, almost exactly the same size, with a ~ 1-1/2" long plug pressed in and brazed on the back side.