Vintage maps

[ppppenguin]

The British national Grid starts about 80 km to the West of the Silly Isles, I would hazard a guess at 7.5 degrees west of Greenwich.



Mike

For some obscure reason the GPS prime meridian is about 100 yards away from the Greenwich prime meridian. But that's tiny compared to the long and acrimonious dispute between London and Paris as to whose prime meridian was to be used. London won because most chart makers were London based.