Why is vertical alignment corrected before horizontal alignment?

The rationale for correcting vertical alignment before horizontal alignment is that vertical alignment has a direct impact on horizontal alignment. When machinery or equipment is misaligned vertically, it can lead to significant consequences for the horizontal alignment. For instance, if the vertical misalignment is not addressed first, any adjustments made to the horizontal alignment may become ineffective or require re-adjustment once the vertical alignment is corrected.

This sequential approach ensures that both vertical and horizontal alignments are maintained effectively throughout the process. By prioritizing vertical alignment, technicians can avoid complications and ensure a more stable and efficient overall alignment system, thus leading to better performance and longevity of the machinery.