A dial gauge is used to measure small distances or movements with high precision. Here's how to use one effectively:
Understanding the Dial Gauge
Before use, it's important to know a few things:
- Tolerance: A dial gauge has a specification, usually printed on the face, indicating its tolerance. For example, the dial gauge from the reference has a tolerance of 0.01, meaning that the measurements can have an error of up to that amount.
- Readings: Dial gauges typically have a large dial with numbers, and a smaller dial to keep track of the large dial's revolutions. The needle on the large dial indicates distance traveled based on the gauge's tolerance. For example, if a gauge has 0.01 tolerance and the needle moved from 0 to 10, the movement is 0.10.
Steps for Using a Dial Gauge
Here are the typical steps involved in using a dial gauge:
- Mounting: The dial gauge must be mounted securely to a base, such as a magnetic stand, that is not easily moved. This ensures accuracy during measurement.
- Zeroing: Before making a measurement, the dial gauge must be zeroed. This is usually done by placing the gauge on the reference point of the measurement, and then rotating the dial face, until the dial reads zero.
- Measurement: With the dial gauge correctly positioned, carefully move it into contact with the object being measured. It is important to maintain a straight and consistent approach during this process.
- Reading: As the measuring object changes shape or position, the dial gauge's needle will move, and the measurements are read directly from the dial. The dial's tolerance must be kept in mind while reading the measurement.
Practical Tips for Accurate Measurement
- Secure Mounting: Always ensure the dial gauge is mounted firmly to avoid any movement during the measurement process which can affect accuracy.
- Consistent Contact: Maintain consistent contact with the surface being measured and be sure that the gauge is making contact with it from a perpendicular angle.
- Avoid Force: Do not apply unnecessary force to the gauge, as this can damage it or cause inaccurate readings.
- Read the Dial Correctly: Be sure to note whether the measurement is moving the needle in a positive or negative direction, and account for the gauge's tolerance in your final result.
By following these steps and guidelines, you can use a dial gauge effectively to achieve accurate measurements.
