Re: Curvature Calculator

["Rob Vasey" <rob.vaseyEVERY@THINGbtinternet.com>]

Ashley Sanders <a.sanders@mccx.acy.ukz> wrote in message
8d7c9c$jjq$1@yama.mcc.ac.uk">news:8d7c9c$jjq$1@yama.mcc.ac.uk...
>
> Kelvin Alexander  wrote
>
> > One Chain = 22 yards
> > 20 chains = furlong
> > 8 furlongs = mile
>
> That doesn't add up -- there are 1760 yards to the mile.
> If a chain is 22 yards, then there are 80 chains to the mile
> (which I'm pretty sure is correct.) Maybe there are 10 chains
> to a furlong.
>
> Ashley.

Not on the "Southern".
This week I noticed that hundreds of markers had appeared on the downside of
the line between New Cross Gate and Norwood Junction.
I quickly worked out that they were "chain" markers.
78 chains was marked about 3 feet from a milepost.

"Ere mate,your railway's shrunk".