Everybody loves a flieger. Even if budget means you turn right when you climb aboard and aren’t allowed more than 100ml of anything, there’s still a romance to flying. Originally made for wartime pilots and observers where precise navigation was a very important thing indeed, fliegers are part of watchmaking heritage.
Back in the days when all the best pilots flew red triplanes and had ‘von’ in their surnames, the pilots shooting at them used pocket watches to navigate. The Mark IV.A and Mark V British pocket watches were the thing to have in the cockpit of your SE5. Large enough to hold with gloves on, solid enough to survive and clear enough to read in a shaking aircraft.