Years ago I melted my guage, the kiln was on a shelf too close
to where I was melting my shot (oops). I ordered the whole guage,
its seems to me that it cost about $60.00 from Gesswein. For the
cover maybe you could glue together some thin plexiglass if you
are unable to order just the cover.
I am having a weird thing happening with one of my neycraft
kilns. The little button that you push to open the door it is
melting and running down the side of the door, it remains sticky
even when the kiln is cool. I use a computer to control the
burnout cycle overnight and I am sure it doesn’t exceed 1350 F.
The door seems to close tightly. And I have a twin kiln right
next to it without a melty (is that a word?) button. Every time I
touch it it reminds me of a tootsie roll that has been sitting
out in the sun. Whats up with that?