SV: gauges fogging up

["Per Schoerner" <healeyguy@bredband.net>]

Sorry, I couldn't resist.
IMO the truth is, that warm air can hold more moisture than cold air, when
the coil in the gauge heats up it will heat up the air around it. That
heated air will attract the moisture in the air around it. When that heated
air then hits the cold parts of the gauge the moisture will condense. This
is most visible on the inside of the glass of course. This is probably the
coldest part of the gauge anyway, at least in this country.

Best regards, Per