rdenney
371
When accuracy counts...
Not haute horlogerie by any means, but a focus on accuracy rather than finissage. This is a Zodiac caliber 86 from about 1968, with 5-Hz high-beat escapement and Triovis regulator (before servicing). The watch was warranted to run within "a minute a month", which is +/1 two seconds a day on average. The high-beat design was a joint development of the Community of Precision Watchmaking, founded in 1957 at the prompting of Charles Blum of Ebel, and including many companies, but most notably Girard-Perregaux, Zodiac, Doxa, Favre-Leuba, and Eberhard. Those five companies are also credited with jointly developing the autowinder for the A. Schild 1687/1688 hand-wind movement, which was of course the base ebauche for this Zodiac as well as for many Girard-Perregaux calibers. It was also the base caliber, in both hand-wind and automatic versions, for the GP high-beat chronometers of the late 60's. GP was first to market with a high-beat version, but the other members of the Community of Precision Watchmaking followed suit within two or three years.
Notice the dimples on the rim of the one-piece Glucydur balance wheel. That was a product of hand-poising.
--Rick
TMM - The Macro Monday
I should obviously visit the HoMe forum more often...
As Andrew aslo used to say.....
Oh yes! Bravo JML!
When accuracy counts...
Dear Rick thank you so much for participating
EL2 has had a strong hold on my wrist
Thank you for your kind words dear Tim
Hello Damjan !.. Sorry, 2 days late.. But maybe better late than never !.. So here a quick Macro of one of my absol Rollie favs..