Wood/corn combo moisture meter?

Has anyone found something reliable that works well with both corn and chord wood? I just can't imagine a prong type meter would work at all with corn.

This is probably the only accurate and inexpensive way you are going to be able to measure the moisture content of grains.

http://www.oznet.ksu.edu/drought/drought/AGRICULTURAL GUIDE.pdf

It also works for wood, and if you make you measurements carefully, it is more accurate then even the more expensive pin type meters.


Edit:
Here is a meter for grain, no price but I would guess it is not cheap.
http://www.perten.com/pages/ProductPage____360.aspx?epslanguage=EN&gclid=CLX3qabM9ZcCFQ89awodtindEA

That looks a lot like the one the local grain elevator uses on a comercial level. May be a little out of my budget. For now, the best option I can find is buying seperate meters for grain ($85 or so) and wood ($25 or so)