Proper Use and Maintenance of Feeler gauges

You will find feeler gauges to be an indispensable tool in your workshop. With proper care and maintenance, these precision measuring implements will provide years of reliable service. Start by keeping the blades lightly oiled and free of grime before returning them to storage in the closed position. When in use, remember to tighten the adjustment screw to prevent flexing. By following these simple guidelines, your feeler gauges will maintain their accuracy and condition over time. Now let’s explore in more detail the best practises for using and caring for these essential measuring tools.

What is a Feeler Gauge?

A feeler gauge is a precision measuring tool used to measure the clearance between two parallel surfaces. It consists of multiple blades of varying thicknesses that can be inserted between the surfaces. The blade that fits snugly between the surfaces indicates the clearance measurement.

Materials

Manufacturers typically make the blades from hardened steel, stainless steel, or non-magnetic alloys to ensure dimensional stability and durability. A steel frame usually holds the blades together. Some gauges use a knurled screw to secure the blades in the frame during use.

Measurements

Feeler gauge blades come in both imperial and metric sizes. Blade thickness typically ranges from 0.05mm to 1.5mm for metric gauges and 0.002 inches to 0.060 inches for imperial gauges. The blades fit together in the frame with each blade clearly marked for easy identification of its size. At RegionalTech, our collection focuses on the metric range in minute progressions of up to 28 leaves.

Uses

Feeler gauges have many uses in industrial settings. Mechanics commonly use them to set spark plug gaps, measure valve clearances in engines, and set up ignition points. Machinists use them to measure slot widths, hole positions, and surface flatness. The durable yet precise nature of feeler gauges makes them ideal for measuring clearances in heavy equipment, machine tools, and other industrial machinery.

Proper care and maintenance of feeler gauges help ensure accuracy and extend useful life. Keeping the blades clean, dry and securely fastened in the frame when not in use will help prevent damage, rust and unnecessary wear. With regular calibration and care, a quality set of feeler gauges can provide many years of reliable service.

What is the Feeler Gauge Used For?

Feeler gauges have many uses in industrial settings. Mechanics commonly use them to set spark plug gaps, measure valve clearances in engines, and set up ignition points. Machinists use them to measure slot widths, hole positions, and surface flatness. The durable yet precise nature of feeler gauges makes them ideal for measuring clearances in heavy equipment, machine tools, and other industrial machinery. The flexible blades can measure gaps in awkward or hard-to-reach areas. 

How to Use a Feeler Gauge?

When using a feeler gauge, ensure the blades are clean and free of debris. Carefully select the correct blade size needed for your measurement and securely tighten the adjusting screw to prevent slipping. Gently slide the selected blade into the gap or space requiring measurement. For the most accurate reading, hold the gauge level and steady. Once inserted, the blade should move freely through the gap with slight drag. If the blade does not fit or cannot be inserted, try the next smallest size.

When measuring curved or uneven surfaces, multiple measurements may need to be taken at different points to determine an average gap width. Record your measurements to properly diagnose any issues and determine necessary adjustments or repairs.

How to maintain and take care of feeler gauges?

To ensure precision and accuracy, proper care and maintenance of feeler gauges is essential.

Cleaning

After each use, feeler gauges should be cleaned with an oily cloth to remove any debris and prevent rusting. Wipe each blade individually. Do not soak the feeler gauge in any solvents, as this can damage the blades.

Storage

When not in use, keep feeler gauge blades closed to prevent bending. Store feeler gauges in a dry location away from high heat. For added protection, you may keep them in a sturdy case. Avoid dropping feeler gauges, as this can affect blade alignment and gauge accuracy.

Inspection

Inspect feeler gauges regularly for any damage to the blades or frame. Check that blades move freely and are straight, with no nicks or burrs. Replace damaged feeler gauges immediately, as inaccurate measurements can lead to improper clearances and part fit. Lubricate the pivot point of adjustable feeler gauges with a drop of machine oil to keep blades moving smoothly.

Adjustment

For the most accurate measurements, ensure the adjusting screw on adjustable feeler gauges is tightened securely to hold blades in place during use. Loosen the screw when finished to allow free movement of the blades again. With regular maintenance and care, feeler gauges can provide many years of reliable service.

Conclusion

Maintaining feeler gauges properly is crucial to ensure accuracy and longevity. Always clean the blades after use and store closed to prevent damage. When in use, tighten the adjustment screw for security. With proper care, they can deliver precise measurements for years to come. Following these simple steps allows you to get the most out of an indispensable inspection and calibration tool.