The Movement Clinic · Self-tests
Run a self-test
These seven procedures apply to any mechanical watch, not only a Tudor — a rate test is a rate test, and magnetism has nothing to do with what's printed on the dial. They're the brand-agnostic core of this section: the same checks a watchmaker would want you to have already run before you book anything.
How to run a rate test on your watch
Why it works: A single day of comparison is noise: temperature alone permits about plus-or-minus 0.6 s/d per degree Celsius under COSC, and wrist heat versus a cold nightstand is up to about 9 s/d of legitimate…
Run this test → Positional variation testHow to test your watch's positional variation
Why it works: Positions are named for where the crown points: dial-up, dial-down, crown-down, crown-up, crown-left, crown-right.
Run this test → Power reserve testHow to test your watch's power reserve
Why it works: The rated figure is a full-wind figure.
Run this test → Winding efficiency testHow to test your automatic watch's winding efficiency
Why it works: This isolates the automatic winding system specifically.
Run this test → Magnetism check and demagnetizingHow to check your watch for magnetism and demagnetize it
Why it works: A compass is unreliable: a compass needle is a magnet, so it's attracted to any ferrous mass — a steel case, steel plates, a steel bracelet — whether or not that mass is actually magnetized, and a…
Run this test → Hand alignment checkHow to check your watch's hand alignment
Why it works: The number one source of false alarms here is parallax — almost every 'my hands are misaligned' post is a photo taken at an angle.
Run this test → Bezel checkHow to check a dive watch's rotating bezel
Why it works: Tudor is explicit that the dive bezel rotates counter-clockwise only.
Run this test →The Movement Clinic is an independent publication by Timekeeper PH. It is not affiliated with, endorsed by, or connected to Tudor or the Rolex Group. These self-tests are general guidance, not a substitute for a qualified watchmaker.