Equipment

We use Witschi timing and testing machines for mechanical and quartz watch analysis, testing and timing. This enables us to identify issues more quickly and to measure the performance of your watch to ensure it is within the factory defined parameters. All water-resistant watches are tested according to their rating using Witschi vacuum and pressure testing equipment. We also have some Bergeon water testing equipment for various specialised tests.  

 

Quartz Watches

For Quartz watch testing and analysis we might use the Witschi New Tech Handy or the Q-Test 6000. These testing stations enable us to check current consumption of the circuit and also of the complete movement, typically around 1 microamp with accuracy to hundredths of a microamp. As well as checking the integrity of the coil, and battery voltage under various conditions it allows us to test the timekeeping rate of the watch. We can choose to measure the quartz crystal itself or pick up and measure the stray fields from the motor or Liquid Crystal Display (LCD). The measurements can be integrated over longer time periods to check watch that use inhibition timing. The reference timekeeper within the testers is brought up to and maintained at a constant temperature to ensure the necessary high accuracy required to test your watch.

 

Mechanical Watches 

For mechanical (wind-up) and automatic watches we use the Witschi Expert to analyse and test the movement. The ticking of a watch contains a lot of information. We can measure the number of ticks and compare that to what it should be (accuracy), the difference between the tick and the tock (beat error), the difference between the start of the first part of the tick and the start of the 3rd part to give how freely the balance is moving (amplitude) which is an indication of the state of the movement. By interpreting the trace on screen other errors such as a damaged tooth can be detected. We check all these in different positions to give a better reflection of actual use. Finally we put the watches on a rotating tester to check automatic winding and to check positional variations have been adjusted sufficiently.