How to Use a Dial Vernier Caliper
Introduction
- Demonstration on the use of a dial vernier caliper.
- Example used: socket to show three types of measurements.
- Unit measures in Imperial.
Basic Parts of the Caliper
- Outside Diameter Jaws: Located on the front side for measuring outer dimensions.
- Inside Diameter Jaws: Located on the back side for measuring inner dimensions.
- Depth Probe: At the bottom, used for measuring depth.
- Lock: Secures the slide to ensure accurate readings.
- Some models include a dial lock to maintain zero settings.
- Thumb Wheel: Moves the sliding mechanism for measurements.
- Scale: Measures in one-inch increments.
- Standard size up to six inches; can go up to 15 inches.
Measurement Increments
- First Decimal Place: Measures tenths.
- Dial Indicator: Measures hundredths and thousandths.
Maintenance Tips
- Keep jaws clean to ensure accuracy.
- Handle the caliper delicately to avoid damage.
- Apply a small amount of lubricant oil to moving parts.
Cleaning the Caliper
- Use paper, cloth, or degreaser to clean grime from jaws.
- Zero the caliper before use by ensuring jaws are clean and fully closed.
Taking Measurements
Outside Diameter
- Ensure jaws are clean and zeroed.
- Use thumb wheel to adjust jaws around the object.
- Apply medium pressure for accuracy.
- Lock the jaws and take the reading.
- Example measurement: 0.667 inches.
Inside Diameter
- Clean inside jaws.
- Open jaws and insert into object.
- Apply medium pressure, lock, and record measurement.
- Example measurement: 0.254 inches.
Depth Measurement
- Ensure caliper is zeroed, open and extend probe.
- Apply medium pressure and lock for measurement.
- Example measurement: 0.359 inches.
Conclusion
- Always ensure caliper is zeroed and clean before use.
- Lock mechanism aids in measurement accuracy.
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This concludes the tutorial on using a dial vernier caliper. For further inquiries, feel free to post comments or questions.