A feeler gauge, also known as a thickness gauge, is commonly used in the automotive industry to measure the gap between two parts. Here are some key applications:

- Valve Clearance Measurement: In internal combustion engines, it is crucial to maintain proper valve clearance. Feeler gauges help measure and adjust the gap between the valve stem and the rocker arm or camshaft.
- Spark Plug Gap: They ensure the correct gap between the electrodes of a spark plug, which is critical for proper ignition and engine performance.
- Checking Bearings: Feeler gauges help in measuring the clearance in bearings, ensuring they are within specified tolerances.
- Measuring Brake Pad Clearance: They can check the gap between the brake pad and the rotor, ensuring proper brake function and wear.
- Transmission Assembly: During the assembly of transmission components, feeler gauges help verify and adjust clearances between parts.
Using feeler gauges accurately requires selecting the right thickness and ensuring a snug fit without forcing, which provides precise measurements for optimal automotive performance.
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