What type of caliper is known for providing very accurate measurements over a large range?

The Vernier caliper is renowned for its ability to provide very accurate measurements, particularly due to its unique design that includes a sliding scale known as the Vernier scale. This scale allows the user to read measurements with a precision of typically 0.02 mm or 0.001 inch, depending on the specific caliper design and calibration.

One of the key advantages of the Vernier caliper is its versatility in measuring not just external dimensions (like width) but also internal dimensions (like internal diameters) and depths. The combination of the main scale and the Vernier scale allows for precise readings across a wide range of sizes. This makes the Vernier caliper particularly useful in applications where high accuracy is required, such as in machining and mechanical work.

While other types of calipers, such as micrometer calipers, offer high precision, they typically have a more limited range intended for specific uses. Dial calipers and digital calipers also provide accuracy but may not always match the precise measurement capabilities over a wider range that a Vernier caliper can achieve, especially with regard to calibration and skill in reading the measurements. Therefore, the choice of the Vernier caliper is justified for applications demanding accuracy over a broad measurement span.