Some of the old OS triangulation pillars now used as GPS Points (Passive Stations) can be seen in GE. In an idle hour it can be fun to see just how accurate the combination of GE and Grid Lines can be.
The OS Passive Station Database is here:
http://gps.ordnancesurvey.co.uk/passive.aspAccurate to a metre or so, for the ones I've looked at. Quite remarkable!
Regards,
Nick.
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