It I wanted to measure the amount of moisture in my floor to see whether it was OK for wood flooring, what kind of a tool would I need?
Would this simple tool tell me anything? http://www.lowes.com/pd_78059-56005-MMD4E_0__?productId=3136919&Ntt=moisture+meter&pl= 1¤tURL=%2Fpl__0__s%3FNtt%3Dmoisture%2Bmeter& facetInfo=
This is the tool you would need. They come in all different price ranges. I suppose you will get what you pay for.
This tool will give you very inaccurate results, if you are seriously wanting to know get a calcium chloride test from a local flooring distributor and perform the test S stated in the instructions. This will give you an accurate MVER rating
Impossible to tell what he needs without knowing if the subfloor is wood or concrete.
(AKA Floorist, Rusty Baker)