[time-nuts] Averaging Location for Position Hold
pvince at theiet.org
Wed Sep 14 15:47:22 UTC 2011
> I hear that there is a hobby where people photograph these and collect
> the photos. Seems pointless in the city but many are on mountain
> peaks and other places with good views. The hobby is more reasonable
> if you find them without using GPS. The USGS maps are good enough o
> put you within 10 to 20 feet of the BM without using a GPS.
> Chris Albertson
> Redondo Beach, California
In the UK there is a website: <http://www.trigpointinguk.com/> that
encourages this hobby. A "trig-point" being short for Triangulation
Pillar which are reference points set up by the Ordnance Survey.
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