A Feeler Gauge is a precision measuring tool used to accurately check and measure the gap or clearance between two closely fitted surfaces. It consists of a set of thin, hardened steel blades of different thicknesses, allowing users to determine the exact spacing required for proper machine operation. Feeler gauges are widely used in automotive, engineering, manufacturing, and maintenance applications for adjusting valve clearances, spark plug gaps, bearings, and other precision components. Built for durability and accuracy, they ensure reliable measurements and help maintain the efficiency and performance of mechanical equipment.