Re: [Therion] Hidroniveler data input

[Wookey]

On 2007-08-23 01:53 +0100, Olly Betts wrote:
> I think a "hidroniveler" must be a barometer in English

I think it is actually a 'hydrolevel', which is a specialised version
of a barometer/altimeter/depth gauge.

These all funamentally amount to the same thing so far as survex is
concerned either absolute or difference height readings, although in
practice their readings may come in different forms which need to be
allowed for (such as absolute vs difference). Certainly the
calibration requirements for high-altitude hyrdolevelling are quite
different from those for conventional instruments.

For details See the (evolving) article on Hydrolevelling Krubera in
various journals: AMCS Activities Newsletter, no. 29, October 2006
issue of Compass and Tape (vol. 17, no.3, issue 59), Summary in Compass
Points 36, and (IIRC) a less geeky version in a recent Speleology (but
not the #8 I can lay my hands on right now), and a forthcoming one in
CP 38 wih more of the tech details in. 

Wookey
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