This is the original lecture given by Dr. Matthew Clark on the topic of Hairspring Dynamics for American Watchmakers-Clockmakers Institute...
Isochronism
This is the original lecture given by Dr. Matthew Clark on the topic of isochronism and positional adjustment. Dr. Matthew...
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Recent Comments
Bragdur Protektor uses the VK64 movement.
I have about a dozen Seiko watches, an older Scuba with 6R15 and a similar…
My Hamilton H70575733 has this movement. On my wrist during the day, it runs about…
I have this Mathey-Tissot with this movement that was gifted to me in the early…
Probably a dumb question but can a 6497 be converted to a 6498?
This is not correct. You have 2 years to register and you get an extra…
Should have added that in this watch, it's non-hackable and has a ghost date.