# Find Circle

The Find Circle tool allows you to determine the presence or absence of a circular edge. The Find Circle tool can identify circular edges much faster than the Find Pattern tool.

To add the Find Circle tool to your job:

1. Open the Inspect tool palette, expand the Presence/Absence tool group, and select the Find Circle tool. The tool automatically finds circles on your image and highlights them in cyan on the acquisition display screen.

2. Click on the highlight of the circle you want the tool to find.

3. Click OK.

To adjust the edge settings:

Use the Polarity setting to change the direction of edge finding between dark and light areas. The available options:

- black-to-white

- white-to-black

- either (default)

Adjust the Accept Threshold to change the acceptance threshold for finding features in your images, such as patterns, circles, and edges.

- Decrease the threshold to accept both strong matches and weaker matches.

- Raise the threshold to only accept stronger matches and ignore weaker matches.

To adjust the Accept Threshold:

- Use the slider.

- Or enter a numerical value into the box.

You can also enable advanced tool settings if your job requires more complex configuration. For more information on the advanced tool settings that are available, see Advanced Tool Settings.