# 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.

   Note: If the desired edge is not available, check Show Line and place the line along the desired edge.

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.