Generally speaking, any instrument which counts or records. Chronograph counters are mechanisms which indicate on a dial the number of revolutions made by the chronograph hand, in other words the minutes. Sports counters are mechanisms featuring a dial with a large central hand which jumps forward at intervals of 1/5th, 1/10th, 1/50th or 1/100th of a second, depending on the make. A smaller seconds hand adds up the minutes.