Trevor Harley wrote:

It is only a small thing, but it's annoying, because bits of stuff do
occasionally end up in the gauge.

I could cover it with something, I suppose, but I'm not sure what would
be best.

My Oregon Scientific gauge has a metal tea-strainer type thing in it (I
suppose I ought to try swapping it over, as the OS one no longer seems
to be transmitting). You could perhaps try an actual tea-strainer with
the handle cut off?
--
Steve Loft
Sanday, Orkney. 5m ASL. http://sanday.org.uk/weather
Free weather station softwa http://sandaysoft.com/