Giraffe G4
https://www.eztruckstore.com/product/...
Giraffe G4's Overhead Collision Avoidance System is a state of the art electronic measuring system that accurately measaures the height of bridges, trestles, tree limbs, and any overhead structure. This product is perfect for Oversize Loads, Pilot Cars, Semi Trucks and RVs. Save money and avoid expensive damage to your trailer, RV, or Oversize Load with the Giraffe G4 System.