How does cross-dial alignment improve accuracy?

Cross-dial alignment enhances accuracy primarily because it allows for both shafts to rotate during the alignment process. This simultaneous rotation enables a more precise assessment of misalignment conditions from different angles. When both shafts are in motion, it gives a clearer picture of the relationship between the shafts and helps identify any angular or parallel misalignments.

By rotating both shafts, the method captures real-time data across different points of the shaft's circumference, which can highlight any inconsistencies that might not be observable if only one shaft was rotated. This dynamic measurement increases the reliability of the readings being taken, which ultimately translates to a more accurate alignment.

In contrast, relying on static measurements or avoiding certain readings would not contribute to the same level of accuracy. The methodology of cross-dial alignment emphasizes the importance of dynamic interaction between the shafts to optimize alignment precision.