# Circle Fixture

The Circle Fixture tool allows you to find a circle and use it as a fixture. The X, Y of the fixture is the center of the circle and the fixture provides no angle information. This fixture works for only translation on the X, Y plane.

To use the Circle Fixture tool:

1. Open the Inspect tool palette, expand the Locate tool group, and select the Circle Fixture tool.

2. Select a circle. The selected circle is indicated with purple.

3. Click OK.

The tool creates a fixture from the selected circle.

To adjust the circle settings:

Use the Polarity setting to change the direction of circle finding between dark and light areas. The available options are black-to-white, white-to-black, and either. By default, the Polarity is set to either.

Adjust the Accept Threshold to change the amount of accordance needed for a passing result using the slider or by providing the numerical value in the Accept Threshold box. Lower the threshold to accept weaker edges or raise the threshold to accept only stronger edges.