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-   -   Height above sea level. (https://www.weather-banter.co.uk/uk-sci-weather-uk-weather/6457-height-above-sea-level.html)

Rob Overfield June 29th 04 07:19 PM

Height above sea level.
 
As anyone come across a website that will enable me perchance to do this, or
will I have to wait till I get to look at some OS maps??

--
Rob

"Caesars don't fear the reaper,
nor do the wind, sun and the rain."



TudorHgh June 29th 04 07:47 PM

Height above sea level.
 
As anyone come across a website that will enable me perchance to do this, or
will I have to wait till I get to look at some OS maps??


You can get a small bit of an OS 1:25000 online from:

http://www.ordnancesurvey.co.uk/oswebsite/getamap/

Follow the procedure. It's a bit laborious, but if you can identify where you
live you can get your height to the nearest metre, as the contours are at 5 m
intervals.

Tudor Hughes, Warlingham, Surrey, 169 m, or 556 ft. Grid ref TQ 3516 5955

Jonathan Stott June 29th 04 09:10 PM

Height above sea level.
 
TudorHgh wrote:

Follow the procedure. It's a bit laborious, but if you can identify where you
live you can get your height to the nearest metre, as the contours are at 5 m
intervals.


Only true if you live on a contour. Otherwise, the best you can do is to
say that you are between x and x+5 metres.

Jonathan

TudorHgh June 29th 04 11:57 PM

Height above sea level.
 
Only true if you live on a contour. Otherwise, the best you can do is to
say that you are between x and x+5 metres.


You can interpolate. You can even allow for non-linear effects, i.e. the
gradient between contours may not be constant, even though they are only 5 m
apart. You can use local knowledge. The only problem I can see is if you live
on a very steep hill and have a job identifying precisely where you are, but
even then local knowledge can help. An accuracy of one metre should be quite
achievable, and is quite sufficient.

Tudor Hughes, Warlingham, Surrey.

Robin Smith June 30th 04 08:01 AM

Height above sea level.
 
You could always use a GPS altimeter. Borrow one from a friend. Average it
out over several readings

"Rob Overfield" wrote in message
...
As anyone come across a website that will enable me perchance to do this,

or
will I have to wait till I get to look at some OS maps??

--
Rob

"Caesars don't fear the reaper,
nor do the wind, sun and the rain."





Richard Herring July 5th 04 09:59 PM

Height above sea level.
 
In article 1088582359.569709@sj-nntpcache-5, Robin Smith
wrote
You could always use a GPS altimeter. Borrow one from a friend. Average it
out over several readings

That gives height above WGS84, which isn't the same datum as mean sea
level.

--
Richard Herring


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