A friend of mine was putting in a subdial and phoned up some gov department to find out the lat and long for his property.. after being put through about 5 different departments the last guy he got said "where do you want it?" And he repeated his address, the guy rhen said " no I mean where in your back garden? Go out side and stand where you are going to install it and i will give you the exact lat and long" yes this guy was watching him live! this was back when the first home phone detatchable handsets were out.. a long time ago. He never did find out who he ended up talking to..