What tool is used to measure part movement and out-of-round in thousandths of an inch?

The dial indicator is specifically designed for measuring precise movements and dimensional variations in mechanical setups, typically in thousandths of an inch. This tool features a needle or pointer that moves in response to the positioning of the workpiece, allowing for easy reading of even minor changes in part displacement or roundness.

Using a dial indicator is particularly effective in collision repair settings where precise measurements are crucial for part alignment, especially in the recovery of a vehicle's structural integrity after an accident. The tool's ability to indicate minute differences makes it essential for ensuring that components are fitted correctly and operate within specified tolerances.

Other options, while they serve useful purposes in measurement, do not provide the same level of precision for this specific application. Calipers are great for measuring external and internal dimensions but are less precise for small movements. Micrometers also provide more exact measurements than calipers but are not as versatile for larger ranges of movement. Laser measuring tools can offer accurate distance measurements but may not be as suitable for measuring small incremental movements required in this context.