All I use are:
* old spoke to dip the nipples in oil and start them thru the rim on to the spoke.
* spoke wrench.
* home built truing stand with center zero stainless steel metric ruler (better than a dishing tool).
* Harbor Freight dial indicator on a magnetic base - can measure both radially and axially.
* ears - for determining adequate tension. Resonance frequency is a the best indicator of tension in a rod (spoke).

I have no problem getting wheels to ±.005" both radially and axially; of course the tires are no where near that good.....