Feeler Gauge

A feeler gauge is a precision tool used to measure gap widths or the clearance between two surfaces. It consists of a series of thin, flat metal blades, each of a different thickness, that are usually marked with their respective measurements. The blades are typically housed together in a holder for easy access and storage.

Purpose and Function

The primary use of a feeler gauge is to measure the clearance between parts that are difficult to measure with other tools. For example, it's commonly used in mechanical applications such as:

• Checking the gap between engine parts like valves and pistons.
• Measuring the spacing between the rotor and stator in electric motors.
• Inspecting the alignment of parts in machinery or automobiles.

How it Works

To use a feeler gauge, you select the appropriate blade based on the desired gap size. The blade is then inserted into the space between the two surfaces to measure the clearance. When the gauge feels snug but can still slide through the gap, it provides an accurate reading of the space between the parts.

Types of Feeler Gauges

1. Standard Feeler Gauge: Consists of a set of blades of various thicknesses.
2. Micrometer Feeler Gauge: This is designed to provide more precise measurements, often used in settings that require high accuracy, such as calibration or engine maintenance.

Applications

• Automotive: Checking spark plug gaps, valve clearances, or brake pad thickness.
• Machining: Ensuring proper fitment and spacing of machined components.
• Maintenance and Calibration: For aligning machinery or ensuring proper operation of precision instruments.

Advantages

• High Precision: Provides very accurate gap measurements down to very small increments.
• Versatile: Can be used in a wide range of industries, from automotive to manufacturing.
• Durable: Typically made from stainless steel, making it resistant to rust and wear.

In short, a feeler gauge is a highly useful tool in any setting that requires precise measurements of small gaps or spaces. It helps ensure proper function, safety, and performance of mechanical systems.