I know that lecky meters are supposed to be replaced by the suppliers every
so often, but how do I find out how often (Google just tells me about
'certifiable life')?

Is it enforceable?

I ask specifically because I rent out a house which still has an old dial
meter - how old must that be? (we bought the property about 12 years and
it looked pretty old even then). My main issue is that the dials make it
hard for a lot of tenants (notably the youngsters) to read, and I'm often
ending up having to sort out issues as a result. I'd love to know if I can
demand someone takes it out!

--
David