[time-nuts] Visiting Greenwich

[Jim Palfreyman]

Speaking of "speaking clocks" - here's two photos of the ones that used to
be used in Australia:

https://en.wikipedia.org/wiki/Speaking_clock#Australia

The top photo with rotating optical disks is a gorgeous piece of machinery.

The one below - I have one, and I keep it running.

:-)


On 6 July 2016 at 09:30, Clint Jay <cjaysharp at gmail.com> wrote:

> Actually,  you're absolutely right,  the speaking clock is on an upper
> gallery display with other timepieces, some of which are amazing.
>
> I've just looked back through my photo gallery and it's the Greenwich time
> service I'm thinking of, a large, five rack wide system that's got (from my
> obviously flaky memory) a Loran receiver and an atomic standard.
>
> Small pic attached.
> On 5 Jul 2016 23:28, "Alan Melia" <alan.melia at btinternet.com> wrote:
>
> > Hi Clint I think when I discussed this last a few years ago with the
> > speaking clock designer and David Rooney the man responsible for the time
> > gallery at Greenwich. The clock is an early quartz unit, probably made at
> > the then Post Office Reseach Labs at Dollis Hill in NW London.  The clock
> > is quite a beast ! It was found in a skip (Dumpster) having been donated
> to
> > a university in the late 1940s, and was refurbished by a local enthusiast
> > for David. He did a good job because I believe he had no access to any
> > documents or circuits. I tried to find some information but it would seem
> > the archive has been lost (vandals !!) It probably contains strange
> things
> > like neon ring counters :-))
> >
> > Alan
> > G3NYK
> >
> > ----- Original Message ----- From: "Clint Jay" <cjaysharp at gmail.com>
> > To: "Discussion of precise time and frequency measurement" <
> > time-nuts at febo.com>
> > Sent: Tuesday, July 05, 2016 9:13 PM
> > Subject: Re: [time-nuts] Visiting Greenwich
> >
> >
> > They also have TIM the speaking clock which has a rack mounted  atomic
> >> standard.
> >> On 5 Jul 2016 21:01, "John Dalziel - crashposition" <
> >> john at crashposition.com>
> >> wrote:
> >>
> >> I would also recommend the Worshipful Company of Clockmakers collection
> at
> >>> the Science Museum. It’s a great collection and they have some of
> >>> Harrison's wooden long case clocks as well as his final chronometer,
> H5.
> >>>
> >>>
> >>>
> >>>
> http://www.sciencemuseum.org.uk/visitmuseum/plan_your_visit/exhibitions/clockmakers-museum
> >>>
> >>>
> >>> John Dalziel
> >>> computus.org
> >>>
> >>>
> >>> Message: 4
> >>> Date: Mon, 4 Jul 2016 18:31:35 -0400
> >>> From: Dave Martindale <dave.martindale at gmail.com>
> >>> To: Discussion of precise time and frequency measurement
> >>> <time-nuts at febo.com>
> >>> Subject: [time-nuts] Visiting Greenwich
> >>> Message-ID:
> >>> <CAJU10Sv0GzUFmSJ5O3eoewWf40EokTYtrANLbZfg8KVw6KcW5g at mail.gmail.com>
> >>> Content-Type: text/plain; charset=UTF-8
> >>>
> >>> I am in London England at the moment, playing tourist with the rest of
> my
> >>> family. I want one day to be a visit to the National Maritime Museum at
> >>> Greenwich, which includes the Royal Observatory Greenwich. I am
> >>> particularly interested in seeing Harrison's H1 through H4, plus other
> >>> high-precision mechanical timekeepers (pendulum clocks, etc).
> >>>
> >>> I know they are at the NMM - their web site shows some of them. But
> where
> >>> are they located on the site? The NMM has a large main building down
> near
> >>> the Thames, while the Royal Observatory and related buildings are on
> the
> >>> top of a hill further inland in Greenwich Park. Are the chronometers
> and
> >>> other precision timekeepers on display somewhere in the Royal
> >>> Observatory,
> >>> or down in the main NMM building? I've spent an hour or two browsing
> web
> >>> sites without finding this particular bit of information.
> >>>
> >>> I figure there must be list members who have visited the NMM, and know
> >>> where the precision timekeepers are actually displayed.
> >>>
> >>> Thanks,
> >>> Dave
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