Why is cross dialing used?

Cross dialing is a technique used primarily for aligning machinery or components with precision. The main reason this method is chosen is because it allows the operator to take readings that are unaffected by end float. End float refers to the axial movement of a shaft or component within its bearings, which can distort measurements if not properly accounted for.

By using cross dialing, the operator can effectively assess the alignment without the interference of this axial movement. This makes it possible to achieve more accurate and reliable measurements during alignment processes.

The other options present different aspects of measuring tools and alignment practices, but they do not capture the core benefit of cross dialing as effectively as the aspect relating to end float does.