The SHR-E360 provides heading and sensor information. It includes a high accuracy triaxial fluxgate magnetometer, a triaxial device, and a rate gyro. This unit is a "strap-down" or "body-axis" sensor. The sensitive axes of the SHR will stay at a constant relationship with the vehicle and move as the vehicle moves. Since the fluxgate sensors rotate with the unit, it must use its angle sensors to calculate the rotation back to level. This function is similar to a mechanical gimbal except that the rotations are done using software.