I bought a timegrapher a couple weeks ago in an attempt to start adjusting my watches myself.
Tried it out today and it went very well! From going around one minute/day fast a say to +- a couple seconds per day.
It was not hard at all but you have to be very steady with your hands and have patience, and adjust it back and forth until you get it right.
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https://youtu.be/XehbtkcDUUY?si=0Myf_FvV6v_JR2HD
I followed this Youtube tutorial
Cool! Where did you get the timegrapher from
Cool! Where did you get the timegrapher from
Bought it from this Aliexpress seller
https://a.aliexpress.com/_ExRvJwV
Good stuff