British Rail 1989 sign

[Jack3131]

A few years ago I had a friend who worked as a shunter at a yard in Cardiff.
He died a few years ago but left a few items from the railway, documents, manuals, etc, and 2 signs. We have been trying to identify the signs but had no luck and were wondering if anyone could take a look and tell us what they are or what they were for.

 

[Trackman]

I'm fairly certain the second one is from a heat exchanger from a loco/unit.

 

[Jack3131]

I'm fairly certain the second one is from a heat exchanger from a loco/unit.

That sounds about right, the company used to make boilers as far as I could tell. Still can't find any info on the blue plate.

 

[John Webb]

The first one, blue and marked 'METER' is most likely a water meter on a 100mm diameter pipe probably sited in a meter pit 3m away from the sign.

 

[Jack3131]

Thanks for the info guys