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Interestingly, the pre and post measurements are not required by FINA to set world records but are required by USMS for Top Ten consideration.
That's because when FINA has a controversy they sweep it under the rug(or change the rules.)When USMS has a controversy they act, at least usually.
That's because when FINA has a controversy they sweep it under the rug(or change the rules.)When USMS has a controversy they act, at least usually.And isn’t it nicer to know ahead of time if your times are likely to count?
so what if there are marks.
are the marks correct?
can the marks move?
the bulkhead can move which is why it has to be measured both before and after every session.