Reading 0.01 mm / 0.0005" Accuracy 0.03 mm Repeatability ± 0.01 mm Image refresh rate 3.0 m/s Operating temperature +5 to +40 °C Storage temperature -10 to +60 °C 3 V, CR 2032 Switch between mm and inches Manual on or off. Automatic shutdown after 5 minutes. Set zero to "0" in any monitor position. Battery Replace the battery when the symbol starts to blink. Remove the battery if you do not use it for an extended period. The battery is located under the front cover. Pull the cover down. Wipe with a dry and clean cloth before use. Avoid exposing the connections to voltage, magnetic fields, shocks, vibrations, drops, etc. Lubricate all metal parts with grease to ensure proper mechanical function.