Metrology Glossary: Feeler Gauge

What Is A Feeler Gauge?

A feeler gauge is a precision tool used for measuring the narrow gaps or clearances between two surfaces. This tool is constructed from a set of thin metal blades, each blade possessing a distinct thickness, which is marked for reference. Typically, these blades are mounted onto a handle or frame, allowing for ease of use. When needed, the blades can be extended or retracted, enabling the user to select the specific thickness required for a precise measurement.

What Are Feeler Gauges Used For?

Feeler gauges are essential tools used in a wide range of applications in industries including: automotive maintenance, machining, and engineering. Their significance lies in their ability to provide precise measurements, a vital aspect when it comes to ensuring the accuracy of adjustments and the perfect fits in mechanical assemblies. This accuracy contributes to the maintenance of high-performance levels and safety standards. In the automotive sector, feeler gauges are vital for tasks such as setting valve clearances, while in machining, they assist in achieving the precise tolerances required for components. Engineers rely on feeler gauges to ensure their designs adhere to stringent specifications, making these tools useful for quality and precision in various domains.