# 13.5 Range Finder

This feature helps detect obstacles in the airspace, displaying their distance from the drone in centimeters (cm). It's crucial for safer spraying missions, reducing potential damage. Users can set a "**Sensor Threshold Distance**" in cm in the Rangefinder settings of RPA settings, and AeroGCS GREEN will display distances using color codes based on this threshold. Range finder will look like on flyview as shown in the following screen. 

<figure><img src="/files/Y7Dqe06RHPNrZ4OwCBNZ" alt=""><figcaption><p>range finder</p></figcaption></figure>


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