In a given alignment setup with X=10", L1=20", L2=40", A dial = -2, and B dial = -21, what are the horizontal moves?

To determine the horizontal moves (S1 and S2) in the alignment setup, it's essential to understand the relationships between the measured values and how they contribute to the adjustments needed in alignment tasks.

In this case, X represents the initial distance or reference point, L1 and L2 are the lengths associated with the two components being aligned, and the readings from the dials indicate misalignment or the required adjustments. The dial readings suggest how far the component needs to move horizontally to achieve proper alignment.

The readings from A dial (-2) and B dial (-21) indicate that both components are misaligned and need to be brought back into alignment. The calculations for S1 and S2 involve deriving the necessary changes based on these dial indicators and the lengths L1 and L2.

The calculation shows that S1 needs to be adjusted positively, leading to a certain amount of movement that would restore proper alignment. For the second component, S2 must also be adjusted in a positive direction reflected in the calculations.

The correct answer captures the behavior of both components moving positively away from their misaligned position, providing the necessary horizontal moves to align them accurately. Therefore, the choice indicating S1 = 20 and S2 = 39 appropriately reflects the needed