The physical model for the subdivision of the kilogram into the decade from 1 kg to 100 g was adapted for the measurement system where weight support plates have to be used. That is the case when combinations of weights with different nominal masses are compared. For this purpose the calibration procedure was modified to eliminate the unknown masses of the support plates. The equation was derived to take into account various influences on the measured mass differences. The influence of the plates on the measurement uncertainty budget and on the estimates of unknown masses of weights was studied into the decade. The analysis of results shows that the application of the support plates influences the measurement uncertainty to a small extent and also confirms the adequacy of the used model.

Paper presents results of the investigation on the magnetoelastic properties of Fe_73.5Nb₃Cu₁Si_13.5B₉ alloy in amorphous and nanocrystalline state as stress and force sensor. The new method of applying stress to the ring core of sensor made of soft magnetic material such as nanocrystalline alloys is presented. In this method the distribution of stresses in the ring core is uniform, so even brittle magnetic materials (like nanocrystalline) may be used as stress sensors. The experimental results indicate that stress and force sensor applications require special parameters of the heat treatment of the sensing element. For this reason the optimal treatment parameters for the cores of inductive components should not be applied for cores of the stress sensors.

Contemporary intensive development of technology puts ever-increasing demands on the reliability of products. The increase in the reliability level is emphasised also in transport machines and equipments. This all requires a further improvement of the method of designing and strength checking of a construction.
A practical example of loading system analysis in presented which demonstrates use the special instrument to measurement of distribution the force and torsion moment in cardan-joint for control purposes and uses the special instrument to generally measurement of distribution random loading parameter.

A new control- and feedback-control-system for Force and Torque Standard Machines was developed in order to fulfil metrological and functional requirements. Different functionalities were programmed as independent modules, e.g. software modules for deadweight machines with sequential or exchange stack can be linked with modules for lever or hydraulic amplification. During the realisation of the concept, a strict requirement was that the application of the control system is possible to older, existing Standard Machines as well as to new Standard Machines, in order to allow retro-fits and upgrades. New features of the user interface allow easy connection of external devices like temperature chambers and the implementation of their functions in a calibration process without changing the software.
This paper outlines the concept of the system and gives details of how it was developed to become a universally applicable part in the GTM range of machines. Furthermore, some successful examples are given where more operational reliability and for this reason more measurement certainty has been reached by fitting the new system to older Standard Machines in the process of an upgrade.

In the strict sense, traceability of torque measurement with rotating torque transducers is given only for non-rotating operation. The presented study examines in how far such proof of traceability is valid also for rotating operation. The method of investigation is a comparison of simultaneous measurements of torque in a rotating shaft train. These consist of measurements with a rotating torque transducer on the one hand and measurements with a cradlemounted absorption dynamometer on the other hand.