After enlarging holes, which tool should be used for inspection?

Using a Go/NoGo gauge for inspecting enlarged holes is essential in ensuring that the hole dimensions meet the specified tolerances. This type of gauge provides a simple pass/fail assessment by allowing the user to determine whether the hole is within acceptable limits. The "Go" side of the gauge should fit into the hole comfortably, indicating that the hole is neither too small nor too large, while the "NoGo" side should not fit, confirming that the hole has not exceeded the maximum permissible size.

This tool is particularly effective in applications where precision is critical, such as in aerospace assembly, where the integrity of components can be significantly affected by even minor dimensional deviations. In contrast, while calipers and digital micrometers can measure dimensions accurately, they require careful interpretation and can be more cumbersome for quick checks of tolerance. Depth gauges, while useful for measuring the depth of holes, do not serve the purpose of verifying if hole diameters are within specified limits. Therefore, the Go/NoGo gauge is the most appropriate tool for this specific inspection task.