# Measure Distance

The Measure Distance tool allows you to measure the distance in pixels between two features. You can use the Measure Distance tool to measure the distance between two edges, the concentricity of two circles, or the distance between the center of a circle and an edge.

To add the Measure Distance tool to your job:

1. Open the Inspect tool palette, expand the Measurement tool group, and select the Measure Distance tool.

2. In the dialog, select the two input features between which you want to measure the distance. The tool automatically finds possible measurement targets based on your image and already added tools, and highlights them in light blue on the acquisition display screen. Click on a highlight to select it as an input feature.

   Once you have selected both input features, the tool automatically adds a Find Edge or Find Circle tool for each feature, depending on the shape of the feature, and then creates the Measure Distance tool based off the found features.

To adjust range limits:

Toggle the Normal/Inverted toggle to change the way the tool result is generated. If set to Normal, the tool produces a passing result if the distance value falls between the defined minimum and maximum values. If set to Inverted, the tool produces a passing result if the distance value falls outside the defined minimum and maximum values.

Adjust the valid range by changing the Minimum and Maximum distance values using the sliders or by providing the numerical values in the boxes below the slider.

Click Set Min/Max to use automatically calculated minimum and maximum distance values. The automatically calculated minimum and maximum values are 5% below and above the current distance value when you add the tool or click the Set Min/Max button.

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.