My protimeter for wood has a scale up to 100 but turns to red after about 20. I think the 75% equivelent is 16 ish, is that right?
0-20 is for wood. After that its a indicator for concrete of where to set up a hygrometer. There is no conversion to rh as it cant read rh.
Funny I've come across this post Trimmer ? CFS do self adhesive trims ? I'm sure CFS is C&F ? The mind boggles lol
Did an amtico job the other day and remembered this thread were i mentioned the A9 under the ply and lvt to produce a nice neat line. thought you might like to see how it looked.