Which of the following tools provides the least accuracy in measuring specific dimensions?

In the context of measuring specific dimensions, a tape measure is designed for general measurements and is often used for longer spans due to its flexibility and portability. While tape measures can be quite accurate for many applications, they do not offer the same precision as the other measurement tools listed.

Micrometers and calipers are precision instruments that can measure very small dimensions with high accuracy, often to the thousandths of an inch. A micrometer is particularly suited for measuring the thickness of small objects, while calipers are versatile for measuring internal and external dimensions as well as depths.

Feeler gauges are designed specifically to measure gap widths and provide a high level of accuracy in those measurements, typically used in settings where precise spacing is critical.

Given the purpose and application of a tape measure, it is the least accurate of the tools listed when it comes to measuring specific dimensions, especially in scenarios requiring precision. Its inherent design for broader measurements means it can introduce greater variability than other more specialized measuring tools.