The system consists of the HD135 camera trolley, HD150 reel and HDBox unit. The components can be combined and used with other IBOS HD camera technology. The design of the trolley is based on the popular REVI 550, and it is equipped with the HD95 camera head with innovative LED lighting, a new digital camera and a sensor for measuring the diameter of the pipe-all for better images and user comfort. The image transmission is provided by metallic cable = easy service with great image quality.