Quote:
Originally Posted by HiBoost
Let me see if I can state it as simply as possible. The +/- 2 spd spec relates to (average) precision. Thus if you had a watch which lost between 59 and 61 seconds a day, every single day for a year, it would actually have near perfect precision (+/- 1 spd) and be completely within the Rolex target standard, though the owner would likely be upset with the performance. The expectation is that because the precision is so good, a simple regulation can now achieve the accuracy (actual deviation from an atomic clock over time). But if precision is lacking, the accuracy will be much more of a crap shoot and likely needs to employ compensators (setting the watch in position X overnight to undo the deviation during the day, etc). Am I missing anything on that?
On the topic, I found this article quite interesting as it highlights some of the measures that manufacturers take to improve precision. They even mention how Rolex machines its springs (in batches of 3 to 4 million) from a single block of alloy to guarantee that they all have the same physical properties which allows for consistency in the adjustment process. This further confirms to me what some of us have been saying, that Rolex does take the precision aspect of time keeping seriously, and are not simply attempting to produce trendy jewelry.
https://watchesbysjx.com/2020/10/pre...materials.html |
That's correct [emoji1303]
Precision is all arrows going through the same hole. Accuracy is all arrows going through the bullseye.
Many members seem to expect all 6 positions to be inside the 2 seconds box.
2, 4, -6, 4, 5, 3 is actually in spec to give an example
As is: -5, -4, -3, -2, -1, +3
In the case of my 114060 the latter was close and it was rather annoying and could be adjusted for wearing habits gratis at the AD.