Quote:
Originally Posted by saxo3
No, not yet. You don't know what he measured (240 degrees in H- or V-position or 5-position average?).
Buy a timegrapher and do your own measurements. With concrete numbers you can also compare before/after RSC.
If you need help to do the measurements and understand the results I can guide you through danny  
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Yes, that'll likely be my next watch-related investment.
To clarify: I wouldn't send in based on amplitude alone. Rather, to your earlier point, using that as a clue that the poor timekeeping is indicative of a bigger problem than simply requiring regulation. Same watchmaker clocked it at -5 s/d yesterday and recommended sending in on that basis alone.
Even if measured in the highest-friction position, it sounds like 241 is at the very bottom of the "healthy" range.
I also got a slip of paper with two other stats: One was the beat error (which I'd asked for) of 0.2. The other was "delta 5" (assuming the little triangle on the paper was meant as a "delta"). Not sure what that's for, other than it's the same as the timekeeping number (-5/day).