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Brian Gaff Brian Gaff is offline
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Default OT Barometer Location

No certainly not it tends to crack.
Actually these are just a sealed bellows I think that operate a needle by
clever gearing.
If the unit is leaky though it will never work. I've not got one now but
they dont seem to care where they are unless you have forced air air
conditioning to keep pressure high, most houses are the same as outside.
I see we are all supposed to be using Hecto Pascals now instead of
Millibarrs etc.
Ho hum, pass me that altimeter.
Brian

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From the Sofa of Brian Gaff Reply address is active
"mark" wrote in message
o.uk...

"thescullster" wrote in message
...
Hi all

I have come by an old barometer - something like the item shown here
http://www.hemswell-antiques.com/ant...ter-33028.html
(although not quite of the quality).
Now I know that these devices measure atmospheric pressure, but I am not
clear on how much this will be affected by the instrument location.

Does a heat source like a radiator change atmospheric pressure?
Can I mount this on a wall above a radiator and expect it to work?

From my memory of the barometer, the needle doesn't appear to move much
in operation. Is this because it was previously in a centrally heated
house, or is there likely to be something wrong here?


Not sure about the instrumentation but I don't think it would be a good
idea to put antique oak woodwork above a radiator.

mark