When taking dial indicator readings for misalignment, how should the coupling halves be rotated?

When taking dial indicator readings for misalignment, it is essential to rotate the coupling halves together. This approach ensures that any changes in readings accurately reflect the alignment conditions between the coupled shafts. By rotating the coupling halves as a single unit, you can capture any variations in distance or angular displacement across the entire coupling, which may indicate misalignment more clearly. This method helps in assessing not just the individual halves but how they interact together in operation, providing a comprehensive understanding of any potential issues.

Rotating the coupling halves together allows for a consistent measurement of the relationship between the shafts, making it easier to identify and correct misalignment problems effectively.