What tool is typically used to measure clearances in bearings?

The appropriate tool for measuring clearances in bearings is a feeler gauge. This tool consists of a set of thin, flat pieces of material, usually metal, that come in various thicknesses. When measuring bearing clearances, the feeler gauge can be inserted between the bearing surfaces to determine the gap size. It allows for precise measurement, ensuring that the bearing is within the required specifications for optimal performance.

While calipers and micrometers are excellent tools for measuring dimensions and tolerances, they are not typically used for measuring clearance in bearings specifically. A dial indicator is more suited for measuring small distances, such as runout or alignment, rather than the direct clearance between bearing surfaces. Therefore, the feeler gauge stands out as the best tool for this specific task.