Dial Indicators

As I've been looking for a .0001 or otherwise known as a tenths indicator i inevitably decided to do some research on the given features. Apparently you want a Jeweled indicator because it won't lose precision as badly as one without it being jeweled. You also want size 2 if you have a choice, the size of the indicator has no impact on the accuracy of the indicator.

Reference:
http://longislandindicator.com/p139.html