Prevention is always better than a frantic reset.
Among the most frustrating and least documented of these is the . If you are staring at a digital screen flashing "E--05" instead of a measurement, this guide is for you. mitutoyo caliper error code e--05
Inspect the metal battery contacts inside the compartment. If they look bent or corroded, gently clean them with a cotton swab dipped in rubbing alcohol and bend them slightly to ensure a tight fit. Prevention is always better than a frantic reset
For older gear-driven models, if the cleaning doesn't resolve the issue: Inspect the metal battery contacts inside the compartment
Using a precision watchmaker's screwdriver, tighten them very slightly (a fraction of a turn) to reduce play.
Debris, grease, or moisture has fouled the capacitive sensor.
If you rely on this caliper for certified inspection (ISO 9001 or AS9100), do not attempt the "heat and pressure" fix. Document the E--05 error, quarantine the tool, and replace it. In metrology, an unrecoverable error is a safety recall for measurements.