Pressure and shear sensitive quartz disks are integrated under high preload between a hollow preload screw and a nut designed as the sensor case. Because of the extremely high rigidity of the sensor elements, the components F z and M z are measured practically without change of stroke or angle. The force and torque-proportional charge signal is picked up by electrodes and fed via a shielded cable to the charge amplifier. The latter converts the charge signals into proportional output voltages, which can be recorded and evaluated.