Thanks guys for your assistance, I've seen the stick on gauge dials but wanted to keep it authentic to the era with the painted faces. I've had a quote to overhaul/refurbish the complete set at £1000
so that isn't going to happen unless I win the lottery!
A little baby oil has worked wonders on the faces whilst retaining the patina and re-plating the metal cages has lifted the years of grime.
Fingers crossed the gauges still work (I think I saw them jump into action when we fired her up first time after 40years) but at the time the gauges weren't top of my agenda.
I'll post some pictures once I've re-assembled the unit.
Cheers,
Paul