The press line’s main shaft alignment station relies on a visual level indicator to verify the relative position of the drive and feed shafts. Operators watch the indicator while the machine cycles, confirming that the two shafts maintain the same height before each stamping stroke. When the indicator shows a deviation, the control system pauses the line, allowing technicians to adjust the shaft mounts or hydraulic settings, thereby preventing uneven force transmission that could damage tooling or produce out‑of‑tolerance panels. This simple yet essential feedback loop supports continuous operation at high cadence, because it eliminates the need for manual measurement after each tool change. In body‑shop robotic welding cells, the same type of indicator is mounted on the joint‑positioning arm, giving weld engineers an immediate cue that the welding torch and the workpiece are correctly aligned along the vertical axis, which reduces scrap and re‑work. By providing a clear, at‑a‑glance status of shaft or arm alignment, the device helps maintain the tight tolerances demanded by modern vehicle assembly and keeps production flow smooth.