For direct connection to CASSY (5210.524013, 5210.524006, 5210.524009A, 5210.524018) or the universal physics measuring instrument (5210.531835) to measure force components up to ±50 N (e.g. spring pendulum or central force components) or accelerations up to 1000 m/s2. The force sensor S consists of a parallelogram with two bending elements, one of which is provided with a full-bridge strain gauge. This results in a rigid construction with the possibility of measuring the force components in any position. Several orthogonally positioned force sensors thus measure, for example, the force vector of a rigid rotary pendulum or of a circularly oscillating thread pendulum.