The other day I went to Huddersfield on the train and noticed that at each tunnel there was a sign showing:-
1) the tunnel number
2) under that there was XXm (which presumably refers to metres)
3) at the side of that was XXch (which I assumed refers to chains).

Now, as everybody knows, a chain is 22 yards long and so I expected the distances (?) to be the same but measured in metres and chains. I was wrong the two measurements bear no relation to each other.

By this time I was totally intrigued so went to the Staition Masters office when I got to Sheffield. They told me that the figures refer to the road bridges over the tunnels but couldn't t tell me what the actual measurements are of.

Can anybody help?

Avalon would know - he's into trains and things related..but he's took the hissy fit.

How very odd... I hope you find out. Things like that annoy the hell outta me too... google it?

Could be totaly wrong but could it mean miles or part of a mile rather than metres.