Caliper rulers are precision measuring instruments used to measure linear dimensions accurately. They consist of a ruler or scale with two arms or jaws that can be opened and closed to measure the distance between two points. Caliper rulers are commonly used in various fields such as engineering, woodworking, metalworking, machining, and scientific research.
There are two main types of caliper rulers:
Vernier Calipers: Vernier calipers consist of a main scale and a sliding vernier scale, which allows for precise measurements to be taken to a fraction of the smallest division on the main scale. The vernier scale has multiple graduations that can align with the graduations on the main scale, enabling users to read measurements with high accuracy.
Dial Calipers: Dial calipers feature a dial indicator instead of a vernier scale for reading measurements. As the jaws are moved to measure a dimension, the dial indicator provides a numerical readout of the measurement on a circular dial. Dial calipers offer ease of reading and are well-suited for applications where quick measurements are required.
Caliper rulers typically have both metric and imperial (inch) graduations, allowing users to measure dimensions in either system of measurement. They may also include additional features such as depth probes for measuring internal dimensions, step measurement capabilities, and locking screws to secure the jaws in position.
Caliper rulers are versatile tools used for various measurement tasks, including:
External Measurements: Measuring the outer dimensions of objects such as diameters, lengths, or widths.
Internal Measurements: Measuring the inner dimensions of holes, bores, or gaps.
Depth Measurements: Measuring the depth of holes, recesses, or slots using the depth probe.
Step Measurements: Measuring the height of steps or shoulders using the step measurement feature.
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