If for theremal zeroing try Tesco Hand warmers £4 for 10 they work well behind a square piece of oven foil cut what ever size you want. they last a long time too.
It was for digital I was referring too but that’s a good shout for thermal for the Tesco hand warmers.
I went out over the weekend and the 6mm cut pieces of reflective tape worked at treat .. many thanks.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
