Lume Workshop / Interactive model
Two finishers, one stopwatch
Hold one hand while the other keeps timing. Beside the dial, see the mechanism that retains the intermediate time.
Two finishers, one stopwatch
Hold one hand while the other keeps timing. Beside the dial, see the mechanism that retains the intermediate time.
01 / What you read
02 / What happens inside
Start the timer or advance it by hand. Both hands are aligned.
The first finisher arrives at 12 seconds, the second at 18. The difference is 6 seconds. Use Catch up to align the hands, then start a new measurement.
What do the moving parts represent?
- The inner heart cam turns with the chronograph. A spring-loaded follower transmits its motion to the split-seconds wheel.
- For a split reading, the outer jaws grip the split wheel. The follower lifts away from the still-rotating cam, illustrating the isolator’s function.
- On release, the clamp opens and the follower returns to the cam, aligning the hands. Real rejoining is rapid; this model shows the resulting position.
An educational model with one pair of seconds hands, not a scale replica of L001.1. The minute counter, flyback, column wheel and isolator control parts are omitted. Cam profile and lever travel are illustrative. No friction or rate accuracy is simulated. No autoplay; manual stepping is available.
An original educational illustration, not a complete simulation of a particular calibre.
How can a split hand stop without stopping the chronograph?
What to observe
Start the chronograph, take a split, then release the hand. One hand keeps running while the other catches up.
Model limitations
This schematic is not a parts drawing of a particular manufacturer’s calibre.
Understand how it works
Why does a stopwatch need two seconds hands? ↗
Find the detailed explanation, technical background and sources in the accompanying article.
More models in the Workshop ↗Share preview image: Photography: Lange Uhren GmbH. Composition: Lume. AI-assisted extraction mask; original watch details retained.