The profile survey sensor is a light trailer type unicycle device consisting of:
- A non-suspended wheel-carrying arm made of light alloy, in which the pendular system for measuring the amplitudes of the profile variations and the sensor for locating their positions are installed,
- A welded tubular chassis, weighted, suspended by a spring-damper device dimensioned to guarantee a constant response of the whole over the bandwidth of the device. It is equipped with traffic signing devices in accordance with the applicable rules in force. The electronic computer modulus, installed in the towing vehicle, is a unit equipped with a microcomputer and all the electronic elements necessary for signal processing and acquisition.
- The light cycle type wheel whose circularity and balance are meticulously checked. The operator station is equipped with a flat touch screen and a keyboard-mouse. The driver has a specific display.