A timing system for a swimming race 1, wherein {HEAD ~ said control device} includes {TAIL ~ a counting circuit} for counting a number of swimmers waiting for their turns in relay after getting a first signal from said starting block signal generator generated by diving of a swimmer 
A timing system for a swimming race 1 , wherein { HEAD ~ said control device } includes { TAIL ~ a counting circuit } for counting a number of swimmers waiting for their turns in relay after getting a first signal from said starting block signal generator generated by diving of a swimmer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH