Take direct and comparative measurements with the same indicator. The combination dial has both a continuous scale numbered clockwise around the face and a balanced scale with positive values on one side of the zero and negative values on the other side. A spring-loaded plunger retracts and extends to measure objects. Rotate the dial face for viewing at multiple angles. These indicators come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy.

Remove the spindle cap and install a lifting lever (sold separately) for easier lifting of the indicator spindle.