Speed King: Tag Heuer Presents The Mikrogirder 2000, The World Fastest Chronograph

A chronograph is basically a very simple device: it's a combination of a wristwatch and a stopwatch. Able to tell time as well as measure elapsed time, it's one of the most useful in daily life of all watchmaking's complications, whether you're timing a three minute egg or, as Apollo 13's crew did, using one to time course correction engine burns to guide a crippled spacecraft home (the crew was forced to use their Omega Speedmaster wristwatches as all electrical power to their cabin instruments had been cut to conserve battery power.)