E.J.
1852
The most important...
thing is no the number of jewels used in a mechanism, the most important is how this jewels are used, where they are used.
So, the rule is easy.... more jewels don´t means a high caliber, the important thing is they are used in the ok parts of this mechanism.
This point, the number of jewels, was used in the past like a marketing argument.
The synthetic Rubies (or industrial jewels) are employed in the axes of most moving parts of the mechanism to avoid the wear of these parts over thetime, given the hardness and wear resistance of these Rubies.
Best
Emilio.
PS: sorry for my poor english.
I have wondered about this for a long time now…
…and finally decided to look for my fellow experts’ opinion. In general terms, the more jewels a movement has the more complicated it should be. The RDM is a 41 jewels movement. The Master Calendar is also a 41 jewels movement but with a full calendar, mo...
I forgot to say that…
…all the three models movements I’ve referred to have more parts than the RDM’s, but the jewels number question stays open Marcelo
There is not a necessary relation between
The number of jewels and the level of complication, Marcelo. A GP WW TC has a Date, a Chrono, and a WT function. Its movement is more than 60 jewels. (!!! ) The U.N Sonata is a big date, Alarm, Alarm Countdown, and Dual Time zone Complication watch. Its m...
Some brands even used to put the number of jewels on the dial!
My answer would be the more moving parts; the more jewels. I understand that Rolex tries to reduce parts, so less moving parts, hence less friction and no need for loads of jewels. Somewhere I read that the Valjoux 7750 uses nylon parts in the movement wh...
