Vernier Caliper

Vernier calipers are precision measuring instruments used to measure the dimensions of objects with high accuracy. They consist of a main scale and a sliding vernier scale, which allows for precise measurements to be taken.

The main scale is a long, graduated ruler that is fixed in place. It is marked with millimeter (mm) or inch (in) divisions, depending on the unit of measurement being used. The sliding vernier scale is attached to the main scale and can be moved along it.

The vernier scale has smaller divisions than the main scale, allowing for more precise measurements. It is marked with a series of lines or ticks that correspond to a fraction of the main scale divisions. The position of the vernier scale relative to the main scale indicates the measurement being taken.

To use a vernier caliper, you would place the object to be measured between the jaws of the caliper. The main scale and vernier scale are then aligned, and the measurement can be read from the vernier scale where it aligns with the main scale.

Vernier calipers are commonly used in various fields such as engineering, manufacturing, and scientific research, where precise measurements are required. They are versatile tools that can measure both internal and external dimensions, as well as depths and step heights.

It's important to note that vernier calipers require proper handling and calibration to ensure accurate measurements. Regular maintenance and cleaning are also necessary to keep them in good working condition.