The standard micrometer divides the inch into:

The standard micrometer divides the inch into:

• A. 100
• B. 1000
• C. 10000
• D. 2000

Answer: (B)

The main idea is that a standard micrometer is built to measure in thousandths of an inch. The sleeve is marked so you can read the inch in 0.001-inch steps, and the thimble provides the fine interpolation within that increment. Together this lets you read measurements to the nearest thousandth of an inch. That’s why the inch is effectively divided into 1000 equal parts on a typical micrometer. The other options describe coarser or finer subdivisions that aren’t how a basic micrometer is calibrated, so they don’t match the instrument’s standard reading capability.

The main idea is that a standard micrometer is built to measure in thousandths of an inch. The sleeve is marked so you can read the inch in 0.001-inch steps, and the thimble provides the fine interpolation within that increment. Together this lets you read measurements to the nearest thousandth of an inch. That’s why the inch is effectively divided into 1000 equal parts on a typical micrometer. The other options describe coarser or finer subdivisions that aren’t how a basic micrometer is calibrated, so they don’t match the instrument’s standard reading capability.