An instrument for manipulating a spinal fixation element relative to a bone anchor includes a bone anchor grasping mechanism, a first adjustment mechanism, and a second adjustment mechanism. 5,and to processes for its production and its use in heat exchangers and building materials. The detector is configured to generate a detection signal when the detector determines that a transient signal satisfies a first signaling condition. In one embodiment, the acid used to precipitate proteinaceous material is perchloric acid, for example, 70% perchloric acid. The segments are mounted on a inner mounting base which also serves as a first stage heat sink for the LEDs. The structure of the gyroscope can be constructed by coupling the housing of the flywheel system with a nutation frame which couples a precession frame so that the spinning axis in the flywheel can be isolated from any outside gyroscopic torque.