To determine the ROBOT PERIMETER, wrap a piece of string
around the outer most parts of the ROBOT (excluding BUMPERS) at the BUMPER ZONE
described in R405 and pull it taut.
The string outlines the ROBOT PERIMETER.
Example: A ROBOT’S chassis is shaped like the letter ‘U’,
with a large gap between chassis elements on the front of the ROBOT. When
wrapping a taut string around this chassis, the string extends across the gap
and the resulting ROBOT PERIMETER is a rectangle with 4 sides.
Figure 8‑1 ROBOT PERIMETER example
![Figure showing ROBOT PERIMETER example.](https://firstfrc.blob.core.windows.net/frc2025/Manual/HTML/2025GameManual_files/image045.png)