Never touch the mobile stud holder (2) if you don’t have a device to measure the beat rate with. 1 is the regulator, and 2 is the mobile stud holder. Lines that have an upward angle show that the watch is gaining time, and a downward angle indicates the watch is losing time.Ĭlose up of the balance assembly of the MST 372. For an amateur or hobbyist, however, a Timegrapher from eBay is an excellent choice to measure and display the rate.Ī Timing machine “listens” to the vibrations in the movement and translates them into lines of dots. They also have more options to select and display and are, therefore, the obvious choice for professionals. The Swiss timing machines are of better quality and are more precise. Either a Swiss one (Witschi or similar) or an Asian one ( Timegrapher or similar). The most accurate way is to use a timing machine.You’ll agree that this method is even more unreliable than the previous one.

Check after 10 minutes and multiply the result with 6. It could even be an app on your smartphone. Another way is to time your watch with a digital stopwatch.This method isn’t very reliable, but if you have no other options, it could work. Come back after 24 hours and look for any time gained or lost. One is to synchronize your watch with an accurate clock (perhaps a radio-controlled clock or the clock on your computer).There are several ways to measure the rate. You can imagine that with a longer swing, the pallet fork will be engaged less so the rate will drop. The balance wheel swings left and right with the help of the hairspring, and with every pass, the impulse pin engages with the pallet fork to advance its position. The balance has several parts, but the most important ones for the rate are the balance wheel, the hairspring, and the impulse pin. The rate, therefore, is the frequency of the pallets locking and unlocking the train wheel. When the gears in the train wheel turn too fast, the watch will gain time, and when they turn too slow, it’ll lose time. Balance wheel in yellow, pallet fork and escape wheel in blue.

How to use a watch timegrapher