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How to recalibrate a dial caliper

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You should also check that your caliper is calibrated correctly. Tighten the jaws until you can see no light between them. You should also check that your caliper is calibrated correctly. Tighten the jaws until you can see no light between them.
If the dial indicator needle does not point exactly to zero when the jaws are closed, you will need to recalibrate your caliper. If the dial indicator needle does not point exactly to zero when the jaws are closed, you will need to recalibrate your caliper.
To recalibrate your caliper, loosen the bezel nut underneath the dial then rotate the dial until the needle is pointing to zero. To recalibrate your caliper, loosen the bezel nut underneath the dial then rotate the dial until the needle is pointing to zero.
Lock the dial into place, by re-tightening the bezel nut. Your caliper is now ready to use. Lock the dial into place, by re-tightening the bezel nut. Your caliper is now ready to use.