San Jose, Calif. -Six degrees of freedom (6 DOF) motion sensing with high-performance is the claim to fame of DMU-H6X inertial measurement unit (IMU) from Crossbow Technology. The digital, six-axis IMU measures X-, Y-, and Z-axis acceleration, plus roll-, pitch-, and yaw-axis angular rates-all without the need for calibration. DMU-H6X provides bias stability of &10 mG for the accelerometers and &r more.