Need Specifications for Moisture Meter

Looking for a source were a can obtain acceptable moisture levels for various building materials example : wood, drywall , cement, mortar etc. I have just recieved a moisture meter that has no instructions or specs. It lists readings as percentages on the display.

Thanks for any help.

http://www.ecometrex.com/moisture_interpretation.htm

http://www.p1m.com/WM3.htm

http://www.fcs.uga.edu/pubs/current/B924.html

http://www.ecometrex.com/moisture_interpretation.htm

What meter did you buy?

Pin Type.

thanks to all for the information much appreciated.

What did you decide?