Abstract: The invention relates to a turning plate for measuring the pushing-off forces of swimmers in a swimming pool when turning and includes force sensors for determining the pushing-off forces and a stiff plate, which can be secured in a stable position parallel to the pool wall. The turning plate has a stiff rectangular frame on which the stiff plate is secured with pre-tensioning by a clamping screw at four locations, in each case over a force sensor. Moreover, next to each of these force sensors, an adjusting pin is arranged on the frame and can be driven out from the frame in order to support the frame on the pool wall. The frame has at least one, preferably two stiff securing brackets for mounting it on the pool edge, preferably on a starting block.

Abstract: The invention relates to a turning plate for measuring the pushing-off forces of swimmers in a swimming pool when turning and includes force sensors for determining the pushing-off forces and a stiff plate, which can be secured in a stable position parallel to the pool wall. The turning plate has a stiff rectangular frame on which the stiff plate is secured with pre-tensioning by a clamping screw at four locations, in each case over a force sensor. Moreover, next to each of these force sensors, an adjusting pin is arranged on the frame and can be driven out from the frame in order to support the frame on the pool wall. The frame has at least one, preferably two stiff securing brackets for mounting it on the pool edge, preferably on a starting block.

Abstract: With the present holding device for bicycle saddles with a seat tube (2) that can be inserted into a guide tube (1) of the frame of a bicycle, a saddle carrier (6) arranged at the upper end (2?) of the seat tube (2) as well as a clamping element (7) for fixing the position of the seat tube (2) in the guide tube (1), the clamping element (7) bears against the inner wall of the lower opening of the seat tube (2) at the lower end of the seat tube (2) in a longitudinally displaceable manner and is connected to a tension element (10). The tension element (10) is thereby arranged running in the interior of the seat tube (2) and is connected at its upper end to a holding element (20), wherein the holding element (20) is arranged in the seat tube (2) in a longitudinally displaceable manner with respect to the longitudinal axis (A) of the seat tube (2).