"Tim+" wrote in message
...

Can you estimate this with an ordinary multimeter?

Nope, it varies too much with the type of wood and
what you do with the probes.

If so, what sort of
figures would indicate a moisture level below 20%?

I assume meters made for the purpose just measure resistance across a
fixed
distance, but I could be wrong.

No, because it varies so much with the wood and it
isnt just the distance that matters