# Clearance Verification
Used to measure the gap between components, displays the minimum gap value between the selected components. Only when the minimum gap value is less than the set gap value will be recognized and displayed. Its command interface is as follows:
Instances or faces to be inspected: Pick the instances or faces to be inspected, and select at least 2 items.
Select Body/Select Surface Icon: Switch which element is currently selected by clicking the icon.
Gap value: Set the standard for gap checking, only the distance with the gap smaller than the gap value will be recognized and displayed.
Calculation results: After picking an instance and clicking the Calculate button, the calculation results are displayed here. Clicking on a gap in the calculation results shows the location of the gap in the viewport. Click the arrow in front of a gap to expand to display the instance corresponding to that gap.
Calculation: After setting the pick and gap values, click the Calculate button to start calculating the results.