A centering indicator, also known as a coaxial indicator, is a precision measuring tool used to accurately determine the center of a workpiece. It is commonly used in machining and manufacturing processes to ensure precise alignment of parts.

• For quick and accurate centering in boring and milling set-up
• Jeweled bearing
• Supplied with 7 type feelers

How it works:

A centering indicator consists of a main
body with a dial indicator mounted at a right angle. As the workpiece rotates,
the indicator measures the deviation from the center. By adjusting the workpiece
until the indicator reads zero at all positions, the center is accurately
determined.

Applications

• Milling Operations: Used to ensure that a workpiece is
  properly centered on the milling machine’s table, relative to the spindle,
  before machining begins.
• Lathe Operations: Ensures that a cylindrical workpiece
  is aligned with the lathe’s spindle axis for accurate turning, facing, and
  other operations.
• Quality Control: Employed in inspection processes to
  verify the concentricity and alignment of machined parts.
• Tool Setup: Helps in setting up cutting tools and
  fixtures by ensuring they are precisely aligned with the machine’s spindle.

This measuring tool has other names too. Wiggler Machining Center-Finder, Coaxial Indicator or Centering Indicator