I use Browne and Sharp slant lines for everyday use set of 1-6". Also have starrets a set of the "super mikes" . My best mikes are Mitytoyo digital used for gage work and fine measurements. these I have 1-3". At the bench a stand is handy at times. I normally wrap little finger in frame and use thumb and fore finger to close and tension. The big thing with Mikes is developing the "feel" of a measurement. Friction thimbles or ratchets can be a big plus for occasional users.
Several things that need to be done. Check zero when you pick it up. Only takes a min and assures they are right. clean anvils before use. Store partially open so the anvils arnt together. If you have gage blocks or pin gauges the mics can be checked at the measurement.