Whirling
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Precision and Robustness of Different Grades of Same Cailber
My question is regarding different grades of the same caliber, for example the Eta 2824-2.
As far as I understand, other than decoration and aesthetic finishes, the main difference between a chronometer grade, a top, an elabore, and a standard grade is, of course, the accuracy and precision of the timekeeping. I understand this has to do with some details of the escapement and attention to adjusting the movement's performance in the various positions.
What I am curious about is whether there are any trade-offs. Are chronometer grades of calibers more delicate than the lower grades? Which would stand up to abuse better? Would service intervals vary between the grades? An AK-47 isn't very precise, but it's really tough. Ferraris are beautiful, but finicky--I certainly wouldn't want to have one for use on dirt and gravel roads all day.
Thanks so much!
Jon
Precision and Robustness of Different Grades of Same Cailber
My question is regarding different grades of the same caliber, for example the Eta 2824-2. As far as I understand, other than decoration and aesthetic finishes, the main difference between a chronometer grade, a top, an elabore, and a standard grade is, o...
2824-2 Grades
Hi Jon, Looking at the technical documents from ETA of the 2824-2 there are differences between the 4 different grades. Some have only to do with the finishing, some with the testing and regulation and some are different materials. In my opinion it is onl...
Thank you so much!
This is very interesting information. It does, however, make me wonder all the more why some rather high-end brands use the lower grade movement, if they're not more robust, and the cost differences between the grades is fairly low compared to the total p...
Questions for Don
Hi Don, thank you for your inputs: me too I’m interested in the differences between the various grades of the ETA movements. In particular, for the watch I’ve designed I’ve chosen the ETA 2892A2 for its reliability and robustness, but also because of the ...
2892A2
Hi Elio, As you may be aware ETA has removed the manufacturers information from the public portion of their website recently. Because of this I am not able to look into more detail on the 2892A2. In small quantities the only movements that are available a...
Well, Don, I know I've got myself into trouble :-)
Dear Don, thank you for your kind, friendly and very competent reply. I wasn't aware ETA has removed the manufacturers information from the public portion of their website. This means that the files I've downloaded when I started to design my dream-watch,...