Harking Back to each IWC’s iconic Mark series pilot’s watches plus a number of chronographs the brand made through the ’90s, the IWC Pilot’s Chronograph fits right in the brand’s aviation lineup. The expression “chronometer” took on a slightly broader meaning as private, moveable timekeeping, as represented by pocket watches https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/