Measuring inductance (and capacitance) is tough, short of a LCR meter. If you do a search on the internet you can find some L meter circuits, but they're kind of dubious.
I made a C meter, which is pretty easy using a microcontroller.
For inductance, what I do, when I *have to* is put a capacitor, (whose value is known) in parallel with the inductor, charge it up, disconnect the source, and measure the period of the oscillations, then calculate the L. As I mentioned, I only do this when I *have to*.
j.