Mitutoyo 2900A-10Metric Dial Indicator, 0.08 mm Measurement Range, 0.001 mm Resolution

Bezel clamp and lifting lever (optional) can be attached to either right or left side. They can be easily installed and removed without tools.
No through screw holes on the frame and secure adhesion between the bezel and the crystal as well as the use of an O-ring prevents water or oil penetration.
It eliminates the possibility of reading errors due to miscounting multiple revolutions.