When you think of a pilot’s watch today, you’re likely thinking of a design style, not a purpose-built piece of aviation technology. In the past, a pilot’s watch had several unique features that aided both civilian and military flyers. The watch had to fit over the pilot’s jacket and be large enough to read at a glance, day or night. Some had larger crowns that could be manipulated while wearing gloves. Complications included things like chronographs and slide rules for tracking speed, fuel consumption, and navigation.
