Which tool is used to measure pump shaft runout?

A dial indicator is specifically designed to measure the runout of a pump shaft effectively. When measuring runout, the dial indicator is set up so that the probe contacts the shaft as it is rotated. This makes it possible to detect any deviation from a true circular path, indicating how straight the shaft is and if it has any wobble or misalignment. The dial indicator provides precise measurements that are crucial for ensuring that machinery operates smoothly and efficiently.

Micrometers and feeler gauges, while they are valuable tools in other applications, do not serve the purpose of measuring runout directly. Micrometers are primarily used for measuring small dimensions and thicknesses with high accuracy, while feeler gauges are used for measuring gaps or clearances. Therefore, they would not provide the necessary data to assess a rotating shaft's alignment or roundness. This makes the dial indicator the most suitable tool for the task.