Answer :
Final answer:
The correct answer is Micrometers, which are precision measuring tools that use a calibrated screw for accurate measurement. Micrometers are essential for obtaining precise measurements in engineering applications. Other precision tools include thread gauges, dial indicators, and feeler gauges, each serving unique purposes.
Explanation:
Measuring Tools in Engineering
In engineering, precision is crucial when it comes to measuring components in machines. A calibrated screw is often used in various precision measuring tools. Among the tools listed in your question, the correct answer is Micrometers.
Micrometers are commonly employed to obtain highly accurate measurements, typically in the range of millimeters or inches. They consist of a U-shaped frame and a screw that moves through a fixed anvil, allowing users to measure the thickness of small objects or the diameter of cylindrical components. For example, when measuring a metal rod, the micrometer can provide readings to the thousandth of an inch.
Other Precision Tools
- Thread Gauge: Used for measuring the pitch diameter of threads.
- Dial Indicator: Great for checking flatness and runout in a setup.
- Feeler Gauge: Helpful for measuring gaps and clearances between parts.
Each of these tools serves specific measurement purposes within engineering applications, but micrometers are particularly noted for their fine level of accuracy.
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