There are different caliper calibration methods to use depending on the make and model of the vehicle. The basics may be the same for calipers but instructions may vary slightly from the manufacturer. Some things to look for are whether or not the stem is bent. Check to see if there is a loose nut or a broken lens. These are just a couple of examples of outward damage. When calibrating
. inch-metric micrometers you should look for things like chipped measuring faces, a bent anvil and loose or missing parts. You can find more information here: https://www.ects.org/Public%20Information/ISO%20Web%20Page/CALIBRATION%20MANUAL%20%205-04.pdf
