Chronometer

[bumblefish]

I did not get all the presents I asked for from Saint Nicholas, well none really as I have to buy my own but that is another story, so if I was to get a new chronometer from the chap I think my children still partially believe in. which chronometer should I ask for?

 

[sarabande]

Seeing as these fancy electronic digital watches are so accurate and have a very verifiable, and consistent, loss or gain rate, I would not hesitate to buy a wrist watch for use as a chronometer. Some of the fancy ones - e.g. Sunto, Casio, have all sorts of other functions, and unless you really need something for a bulkhead or wall, I don't thonk you can beat one of them. They're relatively cheap, too.


Otherwise, there are some very neat Russian ones at a bit of a price!
tick tock


But what a wonderful self-present idea !

 

[BlueChip]

I bought a Seiko multi function chrono watch on eBay in November. It came from HK in about 6 days at much less than I could buy the same for here
The watch is waterproof and has various functions and alarms, plus an altimeter, thermometer, recording barometer and compass. It also keeps excellent time.
Its proven very robust and useful in particular the compass which I thought would be nothing more than a gimmick has turned out to be really handy on lots of occassions.
I recomend the Titanium model, its more expensive but very light.

 

[damo]

I was going to say I use my gps for accurate time, but then I don't really need it that accurately, and if I did it would be because I'm using a sextant and then I wouldn't have a gps.... /forums/images/graemlins/smile.gif

 

[Blueboatman]

Well,3 x £15 Casios would give you chronometric accuracy ,taking the average of the the two that are numerically closest (this was Harrisons and the navys dilemma,how the f--- do you know which of two chronometers is accurate?Answer,carry 3 and operate on the best 2 out of 3 mean as the basis for local ships time...
Alternatively, any radio receiver that can register the pips of a radio hour signal,and applied to a a working timepiece..would suffice,no ?

I.er.assume you want a chronometer in order to sextant navigate ? 4 seconds error = I mile....

 

[Solent sailer]

has any one lisened to the pip's on a digital radio and the fm radio at the same time? an intresting time diffrence, i think the bbc should tell us which one is correct or sort it out!

 

[Otter]

fm radio is accurate, not digital. Hence them getting rid of the pips.

 

[shmoo]

DAB radios tell you the time sync'ed from the input signal anyway so you don't need pips. If you really want an audio signal could set the alarm on your DAB. It will be as accurate as the pips.

 

[Gordonmc]

I bought a small battery operated alarm clock from Lidl about six months ago.
It was only when I got it home that I realised it is radio controlled with accuracy down to a tenth of a second.
Presumably it is only good for use within range of a terrestrial TV or radio transmitter, but a bargain for £3.

 

[Sanderling_]

[ QUOTE ]
Presumably it is only good for use within range of a terrestrial TV or radio transmitter

[/ QUOTE ]

I think that you shall find that most radio sets are only "good for use within range of a radio transmitter!!! /forums/images/graemlins/smile.gif

 

[Stemar]

Aldi has a weather station for change from £20. It has a radio controlled clock with alarm and a barometer with history. The clock's accurate wo <1/2 a second and remembers to change from BST to GMT (unlike me) and to my surprise, the barometer agrees to 1 or 2 mBar with the local met office readings 6 months after being set. Does both jobs a treat.

 

[Gunfleet]

Implications for gamblers

Not sure this can be true. The medium wave radio five footie matches are always 1 sec or more in front of the DAB. If dab were dead accurate it would mean radio five MW is predicting the action. Ooer, uncanny.

 

[ex-Gladys]

Re: Implications for gamblers

"Radio" clocks synchronise with the LW transmission from Rugby... That's receivable thousands of miles away because it bounces off the whatever layer in the atmosphere IIRC

 

[Gunfleet]

Re: Implications for gamblers

You are dead right (though it might be ground wave too) and that does indeed imply they are 'out'. It's exactly this discrepancy in time which navigators use to work out... oh sod it, you know all that. Even radio waves take some time to travel.