# Edge Fixture

The Edge Fixture A fixture is a coordinate location on the image that keeps the tool in the place determined by the fixture. tool allows you to locate a single edge or line, and uses it to construct a fixture. The mid-point of the line provides the X and Y location of the fixture, and the line angle provides the fixture angle.

To use the Edge Fixture tool:

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

2. Select an edge. The selected edge is indicated with purple.

3. Click OK.

The tool creates a fixture from the selected edge.

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.