keseszel wrote:.But I remember the Isostats siphoned off.
And what do the SILVER contacts of the Isostats have to do with the gold plated contacts of the range switch? Silver reacts very readily with sulphur (from the air and there in turn from exhaust fumes etc.) and is therefore coated with silver sulphide - a hard coating that is perfectly (in comparison) insulating . Gold is a metal that does not react with any chemicals in the air. It is therefore not exposed to any resulting problems.
