The left part of Figure 1 shows the basic design of the
spring element. It is realized by a cross-shaped set-up of
sensitive leaf springs. Such a torsion element has been described
by Franek and Maciszewski [2]. This design can be
changed as shown in Figure 1 on the right side. The elimination
of the central part of the cross makes the element much
more sensitive but less resistive to axial loads. The mchanical
design of the sensor has to assure that not allowed
forces are avoided.