Digits of precision: coordinates

This is great:
https://xkcd.com/2170/https://imgs.xkcd.com/comics/coordinate_precision_2x.pngz.

:smiley: :smiley: :smiley:

The UKs Ordnance survey do publish to a high degree of precision the co-ordinates of their passive GPS reference stations.

I have been to this one;

Passive GPS station: Swanbridge - C1ST1667
51.399751654166664, -3.196503619722222

It is where it says it is, but I was unable to verify the position down to the atomic level.