Mitutoyo calipers are precision instruments used for accurate measurements. Knowing how to properly reset them is crucial for maintaining their accuracy and ensuring reliable readings. This guide will walk you through the process, covering various Mitutoyo caliper models and addressing common issues.
Understanding Your Mitutoyo Calipers
Before resetting, identify your caliper's type. Mitutoyo offers several models, including digital and vernier calipers, each with a slightly different reset procedure. The most common types are:
- Digital Calipers: These calipers display measurements digitally on an LCD screen. They usually have a dedicated zero-reset button.
- Vernier Calipers: These calipers use a vernier scale to obtain measurements. Resetting involves adjusting the sliding jaw to the zero mark.
Resetting Digital Mitutoyo Calipers
Most digital Mitutoyo calipers have a simple reset process:
Step 1: Close the Jaws: Completely close the jaws of the calipers, ensuring they are snugly together.
Step 2: Locate the Zero/Reset Button: This button is usually labeled "ZERO" or has a similar symbol (often a stylized "0"). It's typically located near the display screen.
Step 3: Press and Hold the Zero/Reset Button: Press and hold the button for a second or two. You should see the display change to "0.00" or "0.0" (depending on your caliper's resolution). Release the button once the display shows zero.
Step 4: Verify the Reset: Gently open and close the jaws several times to ensure the zero point remains accurate. If it doesn't, repeat the process.
Troubleshooting Digital Calipers:
- Battery Issues: A low battery can sometimes affect the zeroing function. Replace the battery if necessary.
- Calibration Problems: If the calipers consistently show an incorrect zero after multiple attempts, it may require professional calibration.
Resetting Vernier Mitutoyo Calipers
Vernier calipers don't have a dedicated reset button. The "reset" is achieved by physically adjusting the jaws:
Step 1: Close the Jaws: Carefully close the jaws until they meet completely.
Step 2: Adjust the Sliding Jaw: If the jaws aren't perfectly aligned at zero, use the adjusting screw (usually located on the side of the caliper) to carefully move the sliding jaw until both the main scale and vernier scale align at zero. This might require slight back and forth adjustments to achieve precise alignment.
Step 3: Verify the Reset: Open and close the jaws several times. The scales should still align at zero. If not, repeat the alignment process. This might be necessary due to slight wear and tear or minor misalignment in the instrument.
Troubleshooting Vernier Calipers:
- Wear and Tear: Over time, vernier calipers can experience wear, leading to minor inaccuracies in the zero point. Regular cleaning and careful use can minimize this.
- Damage: If the caliper is damaged, it may need professional repair or replacement.
Maintaining Your Mitutoyo Calipers
Proper maintenance is crucial for the longevity and accuracy of your Mitutoyo calipers:
- Regular Cleaning: Clean your calipers after each use with a soft cloth and mild detergent.
- Proper Storage: Store your calipers in a protective case to prevent damage and ensure accuracy.
- Avoid Dropping: Dropping your calipers can cause misalignment and damage.
- Periodic Calibration: Have your calipers professionally calibrated periodically to maintain accuracy.
By following these steps and practicing regular maintenance, you can ensure your Mitutoyo calipers provide accurate measurements for years to come. Remember that if you're experiencing persistent issues, professional calibration or repair may be necessary.
