A long-standing friend rang me up today with a geo connudrum. OK, it may be obvious to land lubbers but for us hydrographers puzzles like this confuse us...
When road signs say x miles (or km for my more enlightened readers) to a town/city, where is the the point to which they are measuring?Ie, I know where A is but where's B? It's pretty straight-forward for a standard cute British village with the village green, church and pub (you can find the middle +/-100m easily) but where is the centre of London, Sydney, Paris? Or are road signs a bit of a hit and miss affair?
Answers on a blog please...