How does a micrometer differ from a Vernier caliper?

A micrometer is known for its ability to provide extremely precise measurements, often up to one thousandth of a millimeter (0.001 mm), making it an essential tool for tasks that require high accuracy. It utilizes a screw mechanism to measure small distances, which allows for a more precise reading compared to a Vernier caliper. The design of the micrometer, with its standardized rotating thimble and calibrated scale, enables the user to take measurements with a high degree of consistency and repeatability.

In terms of applications, while both tools can measure external dimensions, the micrometer is particularly favored for very small measurements, such as the thickness of a wire or the diameter of small objects, which require the kind of precision that a Vernier caliper, with generally lower precision (usually up to 0.02 mm), may not achieve as effectively in some instances. Thus, the micrometer's design and mechanism make it superior for precision work, validating why it is regarded as providing more precise measurements compared to a Vernier caliper.