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Introduction to the free practical course in mechanical watchmaking.
In this course we will work with the HMT 020 movement. It is a manual winding movement, with a central second hand, 17 jewels and a regulating body that works at 18,000 vibrations per hour. This is identical to the Citizen 0201 (clear examples of movements from the 60s and 70s).
In this first video we will analyze the movement in the time comparator to be able to compare the before and after of its performance after going through the full service of it.