The big idea: one dial tells the time, the other two are a stopwatch.
21,600 vph = 3 Hz = 6 ticks/s AP
power reserve 40 h AP
case 41 mm, 10.8 mm thick, 50 m AP
caliber 2385 · 37 jewels · 304 parts AP
30-min counter at 3, 12-h counter at 9, seconds at 6 AP
column wheel AP
vertical clutch std.
heart-cam reset std.
7-column wheel est.
Colour
Recolours the Grande Tapisserie dial, the sub-dials and the case metal. Pairings are illustrative, not AP's catalogue.
Break it
Time something
Step 9 times this event. The small dials above show what you'd read when it stops; the clutch choice shows in the amplitude chip and in how the big hand starts.
- 1
6 o'clock: running seconds
Part of the ordinary watch. It never stops, and it tells you the watch is alive.
- 2
3 o'clock: 30 minutes
Stopwatch minutes. It jumps one notch every time the big central hand completes a lap.
- 3
9 o'clock: 12 hours
Stopwatch hours. It creeps round once in twelve hours, then quietly starts again.
Where the numbers come from
- AP: Audemars Piguet's Royal Oak Chronograph 26320ST specification: 41 mm stainless steel case, 10.8 mm thick, 50 m water resistance, self-winding caliber 2385 at 21,600 vph (3 Hz) with a 40-hour power reserve, 37 jewels and 304 parts, column wheel, blue Grande Tapisserie dial, 12-hour counter at 9, 30-minute counter at 3, running seconds at 6, date between 4 and 5. Octagonal bezel with eight hexagonal screws.
- std.: the caliber 2385 is built on the Frédéric Piguet 1185, a column-wheel chronograph with a vertical clutch and heart-cam reset; those mechanisms are drawn the way such chronographs normally work, not from AP's drawings. The amplitude figures (290° chronograph off, about 25° lost to a horizontal clutch) are typical values, not measurements of this watch.
- est.: the number of columns on the column wheel (7), how much an hour on the wrist winds (about 0.6 h of reserve), the reserve the watch starts with (30 h), and the semi-instantaneous jump of the minute counter are estimates chosen to be plausible. The events in Break it are typical durations; only the sprint is a record.
- Drawn, not measured: the layout of the chronograph bridge, the levers and hammers, the bracelet links and the dial details follow the watch's look and the textbook mechanism, not a technical drawing.