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Re: Speaking of time service

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On 2020-09-10, hancock4@bbs.cpcn.com <hancock4@bbs.cpcn.com> wrote:

> On Thursday, September 10, 2020 at 2:24:48 PM UTC-4, Chris wrote:
>
>> The IBM clocks, with a Graham escapement, were quite accurate
>> to start. There were several models, but the standard model
>> was rated at 15 seconds / month, electrically wound spring,
>> and a more accurate weight driven model at 10 secs / month.
>> I rebuilt one of the standard models and got it rated to better
>> than 20 seconds in 3 months. Bit more effort may have done
>> even better. Not bad for a purely mechanical design...
>
> Better than my Casio watch.
>
> The care and feeding of old time mechanical devices amazes
> me.  For instance there used to be a popular railroad
> worker watch, Hamilton.  Supposedly very durable and
> accurate. Expensive to buy Yet periodically they needed 
> inspection and service by a trained watchmaker (railroads had
> such men on the payroll for that reason).
>
> My cheap electronic watches only need a battery 
> periodically. Generally keep very good time.

My 40-year-old Timex, given to me by a friend, gains
a second a day and takes a new battery once a year.
Takes a licking and keeps on, uh...

-- 
/~\  Charlie Gibbs                  |  Microsoft is a dictatorship.
\ /  <cgibbs@kltpzyxm.invalid>      |  Apple is a cult.
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Speaking of time service hancock4@bbs.cpcn.com - 2020-09-10 11:09 -0700
  Re: Speaking of time service Chris <xxx.syseng.yyy@gfsys.co.uk> - 2020-09-10 19:24 +0100
    Re: Speaking of time service hancock4@bbs.cpcn.com - 2020-09-10 11:52 -0700
      Re: Speaking of time service JimP <chucktheouch@gmail.com> - 2020-09-10 15:05 -0500
        Re: Speaking of time service Chris <xxx.syseng.yyy@gfsys.co.uk> - 2020-09-10 23:29 +0100
          Re: Speaking of time service gareth evans <headstone255@yahoo.com> - 2020-09-11 19:18 +0100
          Re: Speaking of time service hancock4@bbs.cpcn.com - 2020-09-11 11:42 -0700
            Re: Speaking of time service JimP <chucktheouch@gmail.com> - 2020-09-11 15:24 -0500
        Re: Speaking of time service Peter Flass <peter_flass@yahoo.com> - 2020-09-10 16:12 -0700
          Re: Speaking of time service J. Clarke <jclarke.873638@gmail.com> - 2020-09-10 19:40 -0400
            Re: Speaking of time service JimP <chucktheouch@gmail.com> - 2020-09-11 09:14 -0500
          Re: Speaking of time service JimP <chucktheouch@gmail.com> - 2020-09-11 09:10 -0500
        Re: Speaking of time service hancock4@bbs.cpcn.com - 2020-09-11 11:45 -0700
        Re: Speaking of time service usenet@only.tnx (Questor) - 2020-09-11 19:10 +0000
          Re: Speaking of time service JimP <chucktheouch@gmail.com> - 2020-09-11 15:26 -0500
            Re: Speaking of time service Peter Flass <peter_flass@yahoo.com> - 2020-09-11 16:21 -0700
            Re: Speaking of time service maus <maus@dmaus.org> - 2020-09-12 12:36 +0000
      Re: Speaking of time service Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-09-10 23:34 +0000

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