Method and apparatus of integrating a three-axis magnetometer and a three-axis accelerometer to provide attitude and heading, calibrated magnetometer and accelerometer data, and angular rate, while removing sensor error sources over time and temperature and to compensate for hard and soft iron distortions of the Earth magnetic field. The two rotation elements are arranged at the base part 50 that a serial arrangement of a filter of the first rotation element and a filter of the second rotation element can be introduced into the beam, so that different filter stages can be set by different rotary motions of the first rotation element via an overriding clutch. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements. The flexible sheathing encases the flexible section of tube. The data table is then clustered in at least one of the dimensions based on the associated sampling value in the sampling dimension.