How do you use a dial bore gauge?

Using a dial bore gauge involves a few key steps to accurately measure the internal diameter of a bore. Remember, a dial bore gauge must be calibrated before each use.

Here's how to use one:

1. Insert the gauge in the bore: Carefully place the dial bore gauge inside the bore you want to measure.

2. Extend the anvils: Rotate the knob or adjustment mechanism on the gauge to extend the anvils (the measuring points) until they make contact with the walls of the bore.

3. Read the measurement: Once the anvils are in contact with the edges of the bore, you can read the measurement directly on the dial.

4. No micrometer needed: The measurement can be read directly on the tool.

In summary:

Step	Description
1	Insert the gauge.
2	Extend the anvils to contact the bore walls.
3	Read the measurement on the dial.
4	Calibrate before each use