In various contexts of science, technology, and manufacturing, an indicator is any of various instruments used to accurately measure small distances and angles, and amplify them to make them more obvious.

How is a dial indicator used?

The dial indicator is used to indicate the run-out (the misalignment between the workpiece's axis of rotational symmetry and the axis of rotation of the spindle) of the workpiece, with the ultimate aim of reducing it to a suitably small range using small chuck jaw adjustments.

What is dial indicator explain?

The Dial indicator is a mechanical mean, having gears and pinions or levers for magnification system. They can responses to linear measurements even when they are too small. ... When this Dial Indicator is used in any measuring equipment for comparison purpose then these equipment are called Dial Gauges.