What is the pitch of a metric micrometer?

The pitch of a metric micrometer is defined as the distance between two adjacent threads in the screw mechanism of the micrometer. In the context of a metric micrometer, the standard pitch is typically set at 0.5 mm. This means that for every complete rotation of the micrometer thimble, the spindle moves 0.5 mm closer to or further away from the anvil.

This standardization allows for precise measurements, as the micrometer can easily be calibrated to move in increments that are widely used in metric measurements. A pitch of 0.5 mm allows users to achieve fine measurements, which is crucial in applications where accuracy is vital. This characteristic is foundational in understanding how micrometers operate and ensures users can obtain consistent and reliable readings in mechanical settings.

In contrast, the other options present pitches that are not standard for micrometers, making option B the most appropriate choice for a typical metric micrometer used in precision measurement tasks.