Chuck jaw truing tool

[Toolmaker51]

Hi olderdan, I've been working my way to being able to true up the chucks on my lathe. I'm having a hard time sourcing a 1/2"x5" test bar to set my headstock parallel to the ways. Can you post a link to where you would get one?

After that hurdle is over I'm going to make some truing rings like you show and true the chucks, but first thing first.

Reamer blank!!!!!! They're long, even center drilled already, hardened HSS, pretty damn straight and round. Couldn't really ask for better.

Example of item not price 1/2 Inch Diameter x 6 Inch Overall Length, 71110324 - MSC. Make sure they're center drilled, photo and description don't state. Diameters will = +.0002 -.0000 normally, straightness not much concern as they are ground after heat-treat.