# Measure Step Height

The Measure Step Height tool allows you to measure the height difference between two surfaces.

To add the Measure Step Height tool to your job:

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

2. Move the Base and the Measure regions over the areas between which you want the tool to measure the height difference.

   Note: The tool calculates the height difference by subtracting the height of the Base region from the height of the Measure region (Measure - Base = Difference).

3. Make any of the following optional adjustments:

   - Change the shape of the regions in the tool dialog on the right. The available shapes are Circle, Rectangle, and Annulus. The default shape is Circle.

   - Resize the shapes by clicking and dragging the edge, the same way you resize a window.

4. Click OK when ready.

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 average height difference falls between the defined minimum and maximum values. If set to Inverted, the tool produces a passing result if the average height difference falls outside the defined minimum and maximum values.

Adjust the valid range by changing the Minimum and Maximum 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 values.

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.