[time-nuts] Is a crystal likely to change frequency by 3% ?

[Lee Mushel]

Interesting topic!   Of course I no longer wear a watch since such a habit 
after advancing well into retirement seems pointless but I did want to point 
out that perhaps you could include the Bulova Accutron in your studies. 
Long ago I fell on ice and landed on my wrist with the result that my space 
model accutron never ran again .   But a year ago I asked my wife where it 
was and she produced it which was then entrusted to a local horologist who 
studied it and said he couldn't get the parts to repair it.   But after he 
had "examined it" I found that it did, indeed, start running again--for a 
time. But then it stopped and I gave up since others skilled in the art 
simply wanted more for a repair than I wanted to give.   But I will still 
admit that from time to time a watch is a good thing and I find that the 
seven dollar models I can buy today keep time much better than the old 
Accutron ever did!

Encouraging regards,

Lee
----- Original Message ----- 
From: "Alexander Pummer" <alexpcs at ieee.org>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, September 13, 2014 6:44 AM
Subject: Re: [time-nuts] Is a crystal likely to change frequency by 3% ?


>
>
> there is only one magnet, which drives the fastest moving arm -- the 
> pointer for the seconds -- the other arms are connected via gears, by the 
> way that case with the weak periodically recovering battery is an observed 
> one, I connected a paper chart recorder to the clock  and recorded the 
> battery voltage change and the driver pulses of the magnet -- the recorder 
> was not able to follow the individual pulses, but the envelope
> 73
> Alex