[time-nuts] Casio Watches 13 Year Drift in Seattle

Bob Camp kb8tq at n1k.org
Mon Jun 29 00:41:15 UTC 2015


Hi

Just to clarify:

In the “art” the watches all ran fast rather than slow. They *would* have run slow if the
room temperature / skin temperature delta was an issue. Since they did not, one assumes 
that Casio digitally compensates this model (and probably all their watches).  The typical 
watch tuning fork will shift more than the observed delta when run in a cold court house if 
un-compensated.

By far the best explanation is the “set to deliberately run fast” one.

Bob

> On Jun 27, 2015, at 8:19 PM, Jim Palfreyman <jim77742 at gmail.com> wrote:
> 
> My Casio g shock keeps extraordinary time. I did open it up and tune it,
> but still I'd expect it to drift.
> 
> After 6 months untouched I still can't separate by eye the second from UTC.
> 
> Also, with regard to the video's query about all the clocks running slow -
> they have been tuned to run at the temperature of a person's wrist.
> 
> On Sunday, 28 June 2015, John Stuart <j.w.stuart at comcast.net> wrote:
> 
>> I think there may be a new Time-Nut in the Seattle area, , ,
>> 
>> Art, Engineering and Justice - how accurate is a Casio watch?
>> <https://www.youtube.com/watch?v=hwOMUhS8gV0>
>> 
>> 
>> 
>> John, KM6QX
>> 
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