Which tool is used to measure gaps or clearances in mechanical components?

The feeler gauge is specifically designed for measuring gaps or clearances between two parts. It consists of a series of thin metal blades or plates of varying thicknesses, enabling precise measurement of small distances. This tool allows a technician to determine whether the gap between mechanical components, such as valves in an engine or the clearance between gears, falls within specified tolerances.

In practical use, when a technician needs to measure a clearance, they can insert the appropriate thickness of the feeler gauge into the gap. The ability to use various thicknesses makes it versatile for a wide range of applications, ensuring that any required adjustments or inspections can be accurately carried out. This capability distinguishes the feeler gauge from other measuring tools that are not designed for gap measurement but rather for linear measurements or overall dimensions.