Abstract: The invention relates to a length measuring device with a vernier caliper, a hollow profile, on which the vernier caliper is displaceably mounted externally so that it is capable of being brought into contact with an object to be measured in terms of its length, an inner slide, which is displaceably mounted inside the hollow profile, a magnet arrangement, which couples the vernier caliper and inner slide magnetically, so that the inner slide follows every movement of the vernier caliper along the hollow profile, a measuring means for measuring the position of the inner slide along the hollow profile, and a display, visible in the surrounding space of the hollow profile, of the length determined by the measuring means in accordance with the measured position of the inner slide.

Abstract: A method and apparatus for testing the plausibility of electric impedance measurement values. The measurement values are determined during the measurement of the bioimpedance of a person. Real parts and imaginary parts of the impedance measurement values are determined for a plurality of different frequencies and are localized in a complex representation plane. The representation plane is defined by a coordinate axis for the imaginary part and a coordinate axis for the real part. The localization of the measurement values in the complex representation plane is compared to a desired profile, and the measurement values are adjudged to be not plausible if a predefinable deviation from the desired profile is exceeded.

Abstract: The invention relates to a length measuring device with a vernier caliper, a hollow profile, on which the vernier caliper is displaceably mounted externally so that it is capable of being brought into contact with an object to be measured in terms of its length, an inner slide, which is displaceably mounted inside the hollow profile, a magnet arrangement, which couples the vernier caliper and inner slide magnetically, so that the inner slide follows every movement of the vernier caliper along the hollow profile, a measuring means for measuring the position of the inner slide along the hollow profile, and a display, visible in the surrounding space of the hollow profile, of the length determined by the measuring means in accordance with the measured position of the inner slide.

Abstract: A method for testing the plausibility of electric impedance measurement values. The measurement values are determined during the measurement of the bio-impedance of a person. Real parts and imaginary parts of the impedance measurement values are determined for a plurality of different frequencies and are localized in a complex representation plane. The representation plane is defined by a coordinate axis for the imaginary part and a coordinate axis for the real part. The localization of the measurement values in the complex representation plane is compared to a desired profile, and the measurement values are adjudged to be not plausible if predefinable deviation from the desired profile is exceeded.