Digital or Dial indicator is a personal preference. Digital is probably easier to read and everything is going digital. I don't think they are more accurate then a dial.
On the other hand dial indicators have been around a long time. Easily calibrated if you have a set of gauge blocks & most of the bore mikes come with one. Fool proof if you know how to read it. I have a good dozen micrometers, mechanical dial indicators and calipers in my shop. One Digital indicator, the battery is dead. Been dead several years, odd battery not easily purchased, too much trouble to look for a battery when I can pick up a mechanical tool and do the same thing.
Boats
