Feeler Gauge

A feeler gauge is a precision measuring tool commonly used in mechanical and automotive applications. It consists of a set of thin, flat, and flexible metal blades, each with a known and precisely measured thickness. These blades are often notched or marked with their respective thickness values. Feeler gauges are employed to measure small gaps, clearances, or tolerances between two surfaces or objects.

To use a feeler gauge, a user selects the appropriate blade from the set that best fits into the gap or space being measured. The selected blade’s thickness represents the measurement of the gap, allowing for precise assessments of clearances and tolerances. Feeler gauges are indispensable in tasks such as checking valve clearances in engines, setting spark plug gaps, measuring gear clearances, and ensuring the proper spacing in various mechanical and machining applications. Their accuracy and ease of use make them a valuable tool for achieving precise measurements in a wide range of industries.