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: Diameter Measurement Tools
- Vernier and digital calipers provide general dimensional measurements with moderate precision.
- Micrometers offer high-precision measurements specifically for small dimensions, such as cylinder diameters.
- Gauge blocks establish reference standards, not direct diameter measurements.
Step 2: Summary For the most accurate cylindrical diameter measurement, use a micrometer.
Final Answer: \[ \boxed{\text{Micrometer}}\]