Question

Which of the following is the most accurate method to measure the diameter of a cylindrical object?

• A. Vernier calipers
• B. Micrometer
• C. Digital calipers
• D. Gauge blocks

Hint:

A micrometer is designed for precise measurement of small dimensions, such as the diameter of a cylindrical object.

Answer 1

The Correct Option is B

Step 1: Understand measuring tools for diameter.
- Vernier calipers and digital calipers are suitable for measuring dimensions with less precision and are generally used for more general measurements.
- Micrometers are highly accurate instruments specifically designed for measuring small dimensions, including the diameter of cylindrical objects with high precision.
- Gauge blocks are used for setting reference standards and are not typically used to measure the diameter directly.
Step 2: Conclusion The most accurate method to measure the diameter of a cylindrical object is with a micrometer.
Final Answer: \[ \boxed{\text{Micrometer}} \]