Calibration Standards for Calipers

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A caliper is a simple device used for measuring the distance between two points on an object. There are a number of steps one should take in order to ensure proper caliper calibration.

Damage

Before calibration, it is necessary to ensure that they are not damaged in any way. Common types of damage include chipped measuring faces and points; a loose face, sticking or binding parts; damaged tracks, damaged gears and a failure to repeat back to “0.”

Cleaning

Calipers should be thoroughly cleaned to ensure accurate calibration. Calipers should be wiped with a clean cloth, inspected for dirt and metal chips in the rack and blasted with a light stream of air then demagnetized by rubbing them with a rag that has itself been rubbed on a demagnetizer.

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Gauge Blocks

Calipers are calibrated using gauge blocks, which are standard devices used for measuring length. They are calibrated by ensuring that they match the measurements provided by three gauge blocks; for example, a 6 inch caliper should be calibrated using 1-inch, 3-inch and 6-inch gauge blocks. Accuracy should be ensured up to 3 decimal places.

About the Author

Mike Evans has written policies and press releases since 2008. He is particularly interested in writing on politics, law, ethics, church-state separation and science. Evans holds a Master of Arts in philosophy from York University and an Honors Bachelor of Arts with a double-major in philosophy and law and society.

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