We use basic units of fractional with a 16 denominator.  However, would like to be able to have hole callouts show a higher level of precision (round to nearest 64th).  I know how to do it manually by overriding units, but is there a way to have all the hole callouts default to 64 without changing document properties basic units.

Willing to use an api if needed, but was hoping to be able to set up so shows correctly right off the bat when select hole callout.  Seems like should be able to do in the drafting standard?

Thanks all!