| CPC A63B 5/10 (2013.01) [A63B 2220/51 (2013.01); A63B 2220/803 (2013.01); A63B 2220/833 (2013.01)] | 9 Claims | 

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               1. A base plate to be fixed to the ground at an edge of a swimming pool and on which a starting block can be fixed, the base plate comprising: 
            an upper portion and a lower portion that are directly connected to form an inner cavity, and in the inner cavity, measurement electronics with at least one force or motion sensor or at least one strain gauge, to provide a measurement signal according to a location of the starting block to a processor processing unit to determine one or more race parameters and/or to communicate wirelessly or wired to a base station or a timing station, wherein the upper portion includes a planar upper face and the planar upper face includes internal threads configured to receive screws extending downward from a lowest surface of the starting block. 
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