The SHR-360 provides heading and sensor information. It includes a high accuracy triaxial fluxgate magnetometer and a triaxial decice. This unit is a "strapdown" or "body-axis" sensor. The sensitive axes of the magnetometer (like the accelerometers) will stay at a constant relationship with the vehicle and move as the vehicle moves. Since the fluxgate sensors rotate with the unit, the unit must use its angle sensors to calculate the rotation back to level.