daily second acceptable variance
Appreciate this can depend on the movement and the cost of the movement, however trying to understand what is acceptable. I have a Dornbluth 99.1 which I got in November. It's currently loosing 30 seconds a day, compared to an atomic solar watch. This is based on being on the wrist for 12 hours a day, and stored dial up when off. The movement is a manual wind. Any insight appreciated.
daily second acceptable variance
There’s no way I’d be happy with that - in 2 days it’s going to visibly be showing the wrong time. Last year I bought two watches powered by Seiko NH35 movements, one of which cost me just over £100. Both show variance of less than 10 seconds per day. I consider that acceptable. 30 seconds per day from a Dornbluth needs addressing.
Simon
daily second acceptable variance
Quote:
Originally Posted by
Mick P
I will accept that I am not a pleasant person when this crops up.
You are never a pleasant person in your posts anyway
daily second acceptable variance
Quote:
Originally Posted by
walkerwek1958
Had the OP been more rigorous he could have produced a full data set, showing the rate on the wrist, the rate dial- up and the day to day variation. Inevitably there are errors in measuring small changes over a few hours but it allows a picture to be built up. Easiest way is to use a quartz analogue watch for this.
That’s not the owner’s job. He buys a new watch, it doesn’t live to his reasonable expectations, watch is faulty. Maybe by just a simple tweak, but it is irrelevant : in no case the buyer should create a documented audit, that’s the manufacturer s job once he received the returned watch under guarantee.
Quote:
Originally Posted by
walkerwek1958
I always recommend fully winding a hand- wound watch twice/ day to ensure its running with high amplitude and to provide consistency.
A fully tabulated data set is harder for the manufacturer to argue with.
Rubbish. Again you may be correct as to the procedure the manufacturer (or a watchmaker if the watch wasn’t new and guaranteed) should follow but in no way is it reasonable to expect the owner to jump through those hoops to get the manufacturer to do the right thing.