[time-nuts] Visiting Greenwich
tractorb at ihug.co.nz
Wed Jul 6 02:20:13 EDT 2016
I have a pdf of a POEEJ article on the speaking clock that came into service
24 July 1936 if anyone is interested. I suspect this predates the one under
discussion? I also have a two part article on the Mark 2 built in the UK for
----- Original Message -----
From: "Alan Melia" <alan.melia at btinternet.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Wednesday, July 06, 2016 10:17 AM
Subject: Re: [time-nuts] Visiting Greenwich
> 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 :-))
> ----- 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
>> On 5 Jul 2016 21:01, "John Dalziel - crashposition"
>> <john at crashposition.com>
>>> I would also recommend the Worshipful Company of Clockmakers collection
>>> 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.
>>> John Dalziel
>>> 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
>>> <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
>>> 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
>>> are they located on the site? The NMM has a large main building down
>>> 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
>>> 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.
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