What is used to measure the length of small objects with precision?

A caliper is an instrument specifically designed for measuring the dimensions of small objects with a high degree of precision. It can measure the internal and external dimensions as well as the depth of an object. Calipers are equipped with a sliding scale and can come in various forms, such as analog or digital, allowing users to read the measurements easily.

The precision offered by calipers comes from their ability to measure in smaller increments than other measuring tools, making them ideal for tasks where accuracy is crucial, such as in engineering or manufacturing. This makes them the correct choice for measuring small objects precisely, compared to a ruler, meter stick, or tape measure, which are typically used for larger measurements or less precise applications.